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BIOLOGY M.C.Q (1 Marks)

Body Fluids and Circulation · Gujarat Board (GSEB) STD 11 Science (GSEB - English Medium). 157 questions.

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M.C.Q (1 Marks)

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157 questions · auto-graded multiple-choice test.

MCQ 11 Mark
Pacemaker of heart is:
  • A
    $\text{AV}$ node.
  • B
    Bundle of His.
  • ✓
    $\text{SA}$ node.
  • D
    Purkinje fibres.
Answer
Correct option: C.
$\text{SA}$ node.
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MCQ 21 Mark
Lymph is colourless due to the:
  • A
    Absence of $\text{WBC}$
  • B
    Presence of $\text{WBC}$
  • C
    Absence of platelets
  • ✓
    Absence of $\text{RBC}$
Answer
Correct option: D.
Absence of $\text{RBC}$
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MCQ 31 Mark
Which one of the following types of cells lack nucleus in humans?
  • A
    Erythrocytes.
  • ✓
    Neutrophils.
  • C
    Eosinosphils.
  • D
    Monocytes.
Answer
Correct option: B.
Neutrophils.
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MCQ 41 Mark
Which of the following is also called the pacemaker of the heart?
  • ✓
    $\text{SA}$ Node.
  • B
    Bundle of His.
  • C
    Purkinje fibres.
  • D
    Mytral Valve.
Answer
Correct option: A.
$\text{SA}$ Node.
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MCQ 51 Mark
In veins, values are present to check backward flow to blood flowing at:
  • ✓
    Low pressure.
  • B
    High pressure.
  • C
    Atmospheric pressure.
  • D
    None of these.
Answer
Correct option: A.
Low pressure.
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MCQ 61 Mark
Blood platelets are formed from:
  • A
    Thrombocytes
  • B
    Megakaryocytes
  • ✓
    Leucocytes
  • D
    Erythroblasts
Answer
Correct option: C.
Leucocytes
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MCQ 71 Mark
The thickening of walls of arteries is called.
  • A
    Arthritis.
  • ✓
    Atherosclerosis.
  • C
    Aneurysm.
  • D
    Both $(a)$ and $(c).$
Answer
Correct option: B.
Atherosclerosis.
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MCQ 81 Mark
Erythroblastosis foetalis occurs when:
  • A
    Father is $Rh$ negative and mother is $Rh$ positive.
  • ✓
    Mother is $Rh$ negative and father is $Rh$ positive.
  • C
    Both are $Rh$ positive.
  • D
    None of these
Answer
Correct option: B.
Mother is $Rh$ negative and father is $Rh$ positive.
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MCQ 91 Mark
Damage to thymus in a child may lead to:
  • A
    A reduction in haemoglobin content of blood.
  • B
    A reduction in stem cell production.
  • C
    Loss of antibody mediated immunity.
  • ✓
    Loss of cell mediated immunity.
Answer
Correct option: D.
Loss of cell mediated immunity.
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MCQ 101 Mark
A person with which blood group is the least worried person in terms of availability of blood for him in case of emergency?
  • A
    $A$
  • B
    $B$
  • ✓
    $AB$
  • D
    $O$
Answer
Correct option: C.
$AB$
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MCQ 111 Mark
Haemoglobin is having maximum affinity with:
  • A
    $O_2$
  • ✓
    $CO$
  • C
    $NH_3$
  • D
    None of these.
Answer
Correct option: B.
$CO$
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MCQ 121 Mark
The pulse rate can be determined from the:
  • ✓
    Arteries
  • B
    Veins
  • C
    Capillaries
  • D
    Venules
Answer
Correct option: A.
Arteries
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MCQ 131 Mark
Life span of human $\text{RBCs}$ is:
  • ✓
    $120$ days.
  • B
    $9$ days.
  • C
    $20$ days.
  • D
    $90$ days.
Answer
Correct option: A.
$120$ days.
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MCQ 141 Mark
Which of the following factors is known as Christmas factor?
  • A
    Factor $\text{XII}$
  • ✓
    Factor $\text{IX}$
  • C
    Factor $\text{VIII}$
  • D
    Factor $\text{IV}$
Answer
Correct option: B.
Factor $\text{IX}$
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MCQ 151 Mark
Oxygenated blood occurs in:
  • A
    Pulmonary artery.
  • B
    Right atrium.
  • C
    Right ventricle.
  • ✓
    Pulmonary vein.
Answer
Correct option: D.
Pulmonary vein.
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MCQ 161 Mark
Which one of the following blood cells is involved in antibody production?
  • ✓
    $B-$Lymphocytes.
  • B
    $T-$Lymphocytes.
  • C
    $\text{RBCs}.$
  • D
    Neutrophils.
Answer
Correct option: A.
$B-$Lymphocytes.
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MCQ 171 Mark
Thurioside is a proteinaceous toxin which is obtained from:
  • A
    Biofertilizer
  • B
    Farmyard manure
  • C
    Green manure
  • ✓
    Bacterial origin
Answer
Correct option: D.
Bacterial origin
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MCQ 191 Mark
Tissue plasminogen activator:
  • A
    Helps in wound healing
  • ✓
    Dissolves clot in blood vessels of heart
  • C
    Allergy response
  • D
    None of the above
Answer
Correct option: B.
Dissolves clot in blood vessels of heart
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MCQ 201 Mark
Examination of blood of a person suspected of having anaemia, shows large, immature, nucleated erythrocytes without haemoglobin. Supplementing his diet with which of the following, is likely to alleviate his symptoms?
  • A
    Thiamine.
  • ✓
    Folic acid and cobalamin.
  • C
    Riboflavin.
  • D
    Iron compounds.
Answer
Correct option: B.
Folic acid and cobalamin.
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MCQ 211 Mark
Blood returns from lungs to the heart into the?
  • A
    Right atrium
  • B
    Right ventricle
  • C
    Left ventricle
  • ✓
    Left atrium
Answer
Correct option: D.
Left atrium
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MCQ 221 Mark
Name of cells which help in clotting of blood in mammals $............:$
  • ✓
    Platelets
  • B
    Thrombocytes
  • C
    Lymphocytes
  • D
    Monocytes
Answer
Correct option: A.
Platelets
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MCQ 231 Mark
Which one of the following is a correct matching pair?
  • A
    Dup $-$ Sudden opening of semilunar valves at the beginning of ventricular diastole.
  • B
    Pulsation of the radial artery valves in the blood vessels.
  • C
    Purkinje fibers $-$ Initiation of the heart beat.
  • ✓
    Lubb $-$ Sharp closure of $AV$ valves at the beginning of ventricular systole.
Answer
Correct option: D.
Lubb $-$ Sharp closure of $AV$ valves at the beginning of ventricular systole.
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MCQ 241 Mark
Short$-$lived immunity acquired from mother to foetus across placenta or through mother’s milk to the infant is categorised as:
  • A
    Cellular immunity.
  • B
    Innate non$-$specific immunity.
  • C
    Active immunity.
  • ✓
    Passive immunity.
Answer
Correct option: D.
Passive immunity.
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MCQ 251 Mark
Christmas disease is also known as:
  • ✓
    Haemophilia $B.$
  • B
    $\text{AIDS}.$
  • C
    Haemophilia $A.$
  • D
    Haemolytic jaundice.
Answer
Correct option: A.
Haemophilia $B.$
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MCQ 261 Mark
Which of the following correctly explains a phase$/$ event in cardiac cycle in a standard electrocardiogram?
  • A
    $\text{QRS}$ complex indicates atrial contraction.
  • ✓
    $\text{QRS}$ complex indicates ventricular contraction.
  • C
    Time between $S$ and $T$ represents atrial systole.
  • D
    $P-$wave indicates beginning of ventricular contraction.
Answer
Correct option: B.
$\text{QRS}$ complex indicates ventricular contraction.
A normal electrocardiogram $\text{(ECG)}$ is composed of a $P$ wave, a $\text{QRS}$ wave $($complex$)$ and $T$ wave. The $P$ wave represents electrical excitation or the atrial depolarization which leads to contraction of both the atria $($atrial contraction$)$. The $\text{QRS}$ wave $($complex$)$ begins after a fraction of second of the $P$ wave. It represents ventricular depolarization $($ventricular contraction$)$.
This wave is due to spread of electrical impulse through ventricles. The $T$ wave represents ventricular depolarization $($ventricular relaxation$)$. The $S – T$ interval represents the time between the end of the spread of impulse through ventricles and its depolarization. Thus, the $S-T$ segment begins at the end of the $S$ wave and terminates at the beginning of the $T$ wave.
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MCQ 271 Mark
Which of the following cells does not exhibit phagocytic activity?
  • A
    Monocytes.
  • B
    Neutrophil.
  • ✓
    Basophil.
  • D
    Macrophage.
Answer
Correct option: C.
Basophil.
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MCQ 281 Mark
Blood platelets occur in the blood of $..........:$
  • A
    Birds
  • ✓
    Mammals
  • C
    Reptiles
  • D
    Amphibians
Answer
Correct option: B.
Mammals
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MCQ 291 Mark
The cells lining the blood vessels belong to the category of:
  • A
    Columnar epithelium.
  • B
    Connective tissue.
  • C
    Smooth muscle tissue.
  • ✓
    Squamous epithelium.
Answer
Correct option: D.
Squamous epithelium.
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MCQ 301 Mark
Where do you find open circulatory system among the following?
  • A
    Birds.
  • ✓
    Cockroach.
  • C
    Man.
  • D
    Frog
Answer
Correct option: B.
Cockroach.
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MCQ 311 Mark
Which of the following is not main function of lymph glands?
  • A
    Forming $\text{WBC}.$
  • B
    Forming antibodies.
  • ✓
    Forming $\text{RBC}.$
  • D
    Destroying bacteria.
Answer
Correct option: C.
Forming $\text{RBC}.$
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MCQ 321 Mark
Highest content of iron is found in:
  • A
    $\text{WBC}$
  • B
    Bone cells
  • ✓
    $\text{RBC}$
  • D
    Protein
Answer
Correct option: C.
$\text{RBC}$
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MCQ 331 Mark
Which of the following set of animals has an incomplete double circulation system?
  • A
    Shark and whale.
  • B
    Frog and crocodile.
  • C
    Lizard and pigeon.
  • ✓
    Toad and lizard.
Answer
Correct option: D.
Toad and lizard.
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MCQ 341 Mark
In man, blood passes from the post caval into the diastolic right atrium of the heart because of:
  • A
    Pushing of venous valves
  • B
    Suction pull
  • ✓
    Beating of $SA$ node
  • D
    Pressure difference between post caval and atrium
Answer
Correct option: C.
Beating of $SA$ node
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MCQ 351 Mark
What is the $\text{RBC}$ count in healthy human?
  • A
    $4$ million per cubic $mm.$
  • ✓
    $5$ million per cubic $mm.$
  • C
    $6$ million per cubic $mm.$
  • D
    $7$ million per cubic $mm.$
Answer
Correct option: B.
$5$ million per cubic $mm.$
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MCQ 361 Mark
Blood enters the heart because muscles of the $............:$
  • A
    Atrium contracts
  • ✓
    Atrium relaxes
  • C
    Ventricle relaxes
  • D
    Ventricle contracts
Answer
Correct option: B.
Atrium relaxes
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MCQ 371 Mark
Blood group $AB$ has:
  • ✓
    No antibody.
  • B
    No antigen.
  • C
    Neither antigen nor antibody.
  • D
    Both antigen and antibody.
Answer
Correct option: A.
No antibody.
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MCQ 381 Mark
Most of our cells are surrounded by:
  • A
    Blood
  • B
    Fluid equivalent to seawater in salt composition
  • ✓
    Interstitial fluid
  • D
    Pure water
Answer
Correct option: C.
Interstitial fluid
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MCQ 391 Mark
Wall of blood capillary is formed of:
  • A
    Haemocytes.
  • B
    Parietal cells.
  • ✓
    Endothelial cells.
  • D
    Oxyntic cells.
Answer
Correct option: C.
Endothelial cells.
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MCQ 401 Mark
If due to some injury the chordae tendinae of the tricuspid valve of the human heart is partially non$-$functional, what will be the immediate effect?
  • A
    The flow of the blood into the aorta will be slowed down.
  • B
    The ‘pacemaker’ will stop working.
  • C
    The blood will tend to flow back into the left atrium.
  • ✓
    The flow of blood into the pulmonary artery will be reduced.
Answer
Correct option: D.
The flow of blood into the pulmonary artery will be reduced.
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MCQ 411 Mark
In the extrinsic clotting pathway, the active factor $VII$ activates which factors?
  • A
    $X$ and $XI$
  • B
    $IX$ and $XI$
  • ✓
    $IX$ and $X$
  • D
    $XI$ and $XII$
Answer
Correct option: C.
$IX$ and $X$
When there is damage to the blood vessel, the factor $VII$ leaves the circulation and comes in contact with the tissue factor $(TF),$ which is expressed on tissue$-$factor bearing cells, forming an activated $\text{TF - FVIIa}$. This $\text{TF - FVIIa}$ activates factor $IX$ and factor $X$.
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MCQ 421 Mark
$\text{WBC}$ is devoid of:
  • ✓
    Haemoglobin
  • B
    Nucleus
  • C
    Cytoplasm
  • D
    None of the above
Answer
Correct option: A.
Haemoglobin
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MCQ 431 Mark
The second heart sound $($dubb$)$ is associated with the closure of
  • A
    Tricuspid valve.
  • ✓
    Semilunar valves.
  • C
    Bicuspid valve.
  • D
    Tricuspid and bicuspid valves.
Answer
Correct option: B.
Semilunar valves.
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MCQ 441 Mark
Bundle of His is a network of:
  • A
    Nerve fibres distributed in ventricles.
  • B
    Nerve fibres found throughout the heart.
  • C
    Muscle fibres distributed throughout the heart walls.
  • ✓
    Muscle fibres found only in the ventricle wall.
Answer
Correct option: D.
Muscle fibres found only in the ventricle wall.
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MCQ 451 Mark
Blood is poured into the left atrium by:
  • A
    Superior vena cava.
  • ✓
    Pulmonary veins.
  • C
    Inferior vena cava.
  • D
    Pulmonary artery.
Answer
Correct option: B.
Pulmonary veins.
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MCQ 461 Mark
Which of the following statement$/$statements can be related to erythroblastosis foetalis?
  • A
    Severe anemia and jaundice to the baby.
  • B
    Can be avoided by giving anti$-\text{Rh}$ antibodies to mother immediately after delivery of the first child.
  • C
    $\text{Rh}-$antibodies from the $\ce{Rh -ve}$ mother destroys foetal $\text{RBCs}.$
  • ✓
    All of the above.
Answer
Correct option: D.
All of the above.
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MCQ 471 Mark
Reticulocytes may also be called:
  • A
    Blood platelets
  • ✓
    Immature erythrocytes
  • C
    Lymphocytes
  • D
    $\text{WBCs}$
Answer
Correct option: B.
Immature erythrocytes
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MCQ 481 Mark
When body tissues are injured resulting in the loss of blood, the process of blood clot begins and the blood platelets release.
  • A
    Fibrinogen
  • B
    Thrombin
  • C
    Prothrombin
  • ✓
    Thromboplastin
Answer
Correct option: D.
Thromboplastin
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MCQ 501 Mark
In closed circulatory system, blood is enclosed by:
  • A
    Tubes
  • B
    Ducts
  • C
    Valves
  • ✓
    Vessels
Answer
Correct option: D.
Vessels
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MCQ 511 Mark
If kept in $0.8\% \ \text{NaCl, RBCs}$ will:
  • A
    Shrink
  • ✓
    Remain same
  • C
    Burst
  • D
    None of the above
Answer
Correct option: B.
Remain same
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MCQ 521 Mark
One of the common symptoms observed in people infected with dengue fever is:
  • A
    Significant decrease in $\text{RBC}$ count.
  • B
    Significant decrease in $\text{WBC}$ count.
  • ✓
    Significant decrease in platelets count.
  • D
    Significant increase in platelets count.
Answer
Correct option: C.
Significant decrease in platelets count.
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MCQ 531 Mark
Heart failure occurs due to:
  • A
    Heart stops beating.
  • B
    Damage of heart muscles.
  • ✓
    Congestion of lungs.
  • D
    All of the above.
Answer
Correct option: C.
Congestion of lungs.
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MCQ 541 Mark
Blood pressure is measured by:
  • ✓
    Sphygmomanometer.
  • B
    Electrocardiogram.
  • C
    Stethoscope.
  • D
    None of these.
Answer
Correct option: A.
Sphygmomanometer.
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MCQ 551 Mark
‘Dup’ sound is produced during closure of:
  • ✓
    Semilunar valves.
  • B
    Bicuspid valve.
  • C
    Tricuspid valve.
  • D
    Both $(b)$ and $(c).$
Answer
Correct option: A.
Semilunar valves.
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MCQ 571 Mark
Lymph differs from blood in having:
  • A
    No $\text{WBCs}$
  • B
    No proteins
  • ✓
    No $\text{RBCs}$
  • D
    None of the above
Answer
Correct option: C.
No $\text{RBCs}$
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MCQ 581 Mark
What is the normal heart rate in human?
  • A
    $56$ beats per minute.
  • B
    $62$ beats per minute.
  • C
    $66$ beats per minute.
  • ✓
    $72$ beats per minute.
Answer
Correct option: D.
$72$ beats per minute.
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MCQ 601 Mark
Pulmonary artery is different from pulmonary vein because it has:
  • A
    Arger lumen.
  • ✓
    Thick muscular walls.
  • C
    No endothelum.
  • D
    Valves.
Answer
Correct option: B.
Thick muscular walls.
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MCQ 611 Mark
Cells formed in bone marrow include.
  • A
    $\text{RBC}.$
  • ✓
    $\text{RBC}$ and leucocytes.
  • C
    Leucocytes.
  • D
    Lymphocytes.
Answer
Correct option: B.
$\text{RBC}$ and leucocytes.
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MCQ 621 Mark
If due to some injury the chordae tendinae of the tricuspid valve of the human heart is partially non$-$functional, what will be the immediate effect?
  • ✓
    The flow of blood into the pulmonary artery will be reduced.
  • B
    The flow of blood into the aorta will be slowed down.
  • C
    The pacemaker will stop working.
  • D
    The blood will tend to flow back into the left atrium.
Answer
Correct option: A.
The flow of blood into the pulmonary artery will be reduced.
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MCQ 631 Mark
Which of the following organism has the highest heart rate?
  • A
    Elephant
  • B
    Whale
  • C
    Man
  • ✓
    Mouse
Answer
Correct option: D.
Mouse
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MCQ 641 Mark
Carbonic anhydrase occurs in:
  • A
    Lymphocytes.
  • B
    Blood plasma.
  • ✓
    $\text{RBC}.$
  • D
    Leucocytes.
Answer
Correct option: C.
$\text{RBC}.$
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MCQ 651 Mark
Which among the followings is correct during each cardiac cycle?
  • ✓
    The volume of blood pumped out by the right and left ventricles is same.
  • B
    The volume of blood pumped out by the right and left ventricles is different.
  • C
    The volume of blood received by each atrium is different.
  • D
    The volume of blood received by the aorta and pulmonary artery is different.
Answer
Correct option: A.
The volume of blood pumped out by the right and left ventricles is same.
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MCQ 661 Mark
Blood circulation in insects is:
  • A
    Flows in arteries and veins
  • B
    With red blood corpuscles
  • ✓
    Open type
  • D
    Absent
Answer
Correct option: C.
Open type
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MCQ 671 Mark
Hepatic portal system carries.
  • ✓
    Deoxygenated blood from intestine to live.
  • B
    Oxygenated blood from liver to intestine.
  • C
    Oxygenated blood from intestine to liver.
  • D
    Deoxygenated blood from liver to intestine.
Answer
Correct option: A.
Deoxygenated blood from intestine to live.
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MCQ 681 Mark
Chordae tendinae are found in:
  • A
    Atria of heart.
  • B
    Joints of legs.
  • ✓
    Ventricles of heart.
  • D
    Ventricles of brain.
Answer
Correct option: C.
Ventricles of heart.
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MCQ 691 Mark
Systemic heart refers to:
  • ✓
    Enteric heart in lower vertebrates.
  • B
    The two ventricles together in humans.
  • C
    The heart that contracts under stimulation from nervous system.
  • D
    Left auricle and left ventricle in higher vertebrates.
Answer
Correct option: A.
Enteric heart in lower vertebrates.
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MCQ 701 Mark
Coronary artery disease $\text{(CAD)}$ is often referred to as:
  • A
    Cardiac arrest.
  • ✓
    Atherosclerosis.
  • C
    Heart failure.
  • D
    None of these.
Answer
Correct option: B.
Atherosclerosis.
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MCQ 711 Mark
Antigen$-A$ and antibody$-B$ are present in which blood group:
  • A
    $B$
  • ✓
    $A$
  • C
    $AB$
  • D
    $O$
Answer
Correct option: B.
$A$
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MCQ 721 Mark
Duration of cardiac cycle is:
  • A
    $0.7 \ \sec$
  • B
    $0.9 \ \sec$
  • ✓
    $0.8 \ \sec$
  • D
    $0.11 \ \sec$
Answer
Correct option: C.
$0.8 \ \sec$
Duration of cardiac cycle is $0.8$ seconds.
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MCQ 731 Mark
An adult human with average health has systolic and diastolic pressures as:
  • A
    $80\ mm\  Hg$ and $80\ mm\  Hg.$
  • B
    $70\ mm\  Hg$ and $120\ mm\  Hg.$
  • ✓
    $120\ mm\  Hg$ and $80\ mm\  Hg.$
  • D
    $50\ mm\  Hg$ and $80\ mm\  Hg$
Answer
Correct option: C.
$120\ mm\  Hg$ and $80\ mm\  Hg.$
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MCQ 741 Mark
Which one of the following vertebrate organs receives the oxygenated blood only?
  • A
    Gill
  • B
    Lung
  • C
    Liver
  • ✓
    Spleen
Answer
Correct option: D.
Spleen
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MCQ 751 Mark
Pacemaker of heart is:
  • ✓
    $\text{SA}$ node.
  • B
    $\text{AV}$ node.
  • C
    Bundle of His.
  • D
    Purkinje fibres.
Answer
Correct option: A.
$\text{SA}$ node.
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MCQ 761 Mark
Conversion of fibrinogen to fibrin is catalysed by:
  • ✓
    Thrombin
  • B
    Prothrombin
  • C
    Thromboplastin
  • D
    All of these
Answer
Correct option: A.
Thrombin
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MCQ 771 Mark
If vagus nerve is cut the heart beat.
  • ✓
    Increases.
  • B
    Decreases.
  • C
    Will not be affected.
  • D
    Will stop immediately.
Answer
Correct option: A.
Increases.
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MCQ 781 Mark
A matured mammalian $\text{RBC}$ is unusual because:
  • A
    It exhibits diapedesis.
  • B
    It is colourless.
  • ✓
    It has no nucleus.
  • D
    It can change its shape.
Answer
Correct option: C.
It has no nucleus.
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MCQ 791 Mark
Pace maker of the heart is:
  • ✓
    $S.A.$ node
  • B
    $A.V.$ node
  • C
    $A .V.$ septum
  • D
    $L . A.$ septum
Answer
Correct option: A.
$S.A.$ node
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MCQ 801 Mark
With reference to the blood in a normal person, which one of the following statements is correct?
  • A
    White blood cells $\text{(WBC)}$ are made by lymph nodes only.
  • B
    Blood cells constitute about $70$ percent of the total volume of the blood.
  • C
    Compared to arteries, veins are less numerous and hold less of the body’s blood at any given time.
  • ✓
    The blood has more platelets than $\text{WBC}.$
Answer
Correct option: D.
The blood has more platelets than $\text{WBC}.$
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MCQ 811 Mark
Which of the following is not a type of $\text{WBC}?$
  • A
    Neutrophils
  • B
    Eosinophils
  • C
    Basophils
  • ✓
    Erythrocytes
Answer
Correct option: D.
Erythrocytes
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MCQ 821 Mark
In a resting person, the saturation level of haemoglobin as blood leaves the tissue capillaries is approximately:
  • ✓
    $75\%$
  • B
    $40\%$
  • C
    $3\%$
  • D
    $46\%$
Answer
Correct option: A.
$75\%$
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MCQ 831 Mark
What is the normal leucocyte count in human?
  • A
    $4000-6000$ per cubic $mm.$
  • B
    $5000-7000$ per cubic $mm.$
  • ✓
    $6000-8000$ per cubic $mm.$
  • D
    $7000-9000$ per cubic $mm.$
Answer
Correct option: C.
$6000-8000$ per cubic $mm.$
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MCQ 841 Mark
In developing embryo $\text{RBCs}$ are formed in:
  • A
    Lymph node.
  • B
    Bone marrow.
  • ✓
    Liver.
  • D
    Spleen.
Answer
Correct option: C.
Liver.
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MCQ 851 Mark
The heart beat increases at the time of interview due to:
  • A
    Corticotrophic hormone
  • B
    Hyper secretion of renin
  • ✓
    Secretion of adrenaline
  • D
    Antidiuretic hormone secretion
Answer
Correct option: C.
Secretion of adrenaline
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MCQ 861 Mark
Among the following stem cells, which are found in the umbilical cord?
  • ✓
    Cord blood stem cells.
  • B
    Adult stem cells.
  • C
    Embryonic stem cells.
  • D
    All of the above.
Answer
Correct option: A.
Cord blood stem cells.
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MCQ 881 Mark
The hepatic portal vein before reaching the liver, joins the:
  • A
    Dorso$-$lumbar
  • B
    Gonadal veins
  • ✓
    Anterior abdominal vein
  • D
    Femoro$-$renal
Answer
Correct option: C.
Anterior abdominal vein
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MCQ 891 Mark
Cardiac activity could be moderated by the autonomous neural system. Tick the correct answer:
  • A
    The parasympathetic system stimulates heart rate and stroke volume.
  • ✓
    The sympathetic system stimulates heart rate and stroke volume.
  • C
    The parasympathetic system decreases the heart rate but increases stroke volume.
  • D
    The sympathetic system decreases the heart rate but increases stroke volume.
Answer
Correct option: B.
The sympathetic system stimulates heart rate and stroke volume.
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MCQ 901 Mark
Thickening of arteries due to cholesterol deposition is:
  • A
    Blood pressure.
  • B
    Arteriosclerosis.
  • C
    Cardiac arrest.
  • ✓
    Rheumatic heart.
Answer
Correct option: D.
Rheumatic heart.
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MCQ 911 Mark
In humans, blood passes from the post caval to the diastolic right atrium of heart due to:
  • A
    Pushing open of the venous valves.
  • B
    Suction pull.
  • C
    Stimulation of the sino auricular node.
  • ✓
    Pressure difference between the post caval and atrium.
Answer
Correct option: D.
Pressure difference between the post caval and atrium.
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MCQ 921 Mark
The lymph serves to:
  • A
    Transport oxygen to the brain.
  • B
    Transport carbon dioxide to the lungs.
  • ✓
    Return the interstitial fluid to the blood.
  • D
    Return the $\text{WBCs}$ and $\text{RBCs}$ to the lymph nodes.
Answer
Correct option: C.
Return the interstitial fluid to the blood.
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MCQ 931 Mark
How much blood is pumped by the human heart in a minute?
  • A
    $4$ litres.
  • ✓
    $5$ litres.
  • C
    $6$ litres.
  • D
    $7$ litres.
Answer
Correct option: B.
$5$ litres.
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MCQ 941 Mark
What is the percentage of eosinophils in a healthy human?
  • A
    $1-2\%$
  • ✓
    $2-3\%$
  • C
    $3-4\%$
  • D
    $4-5\%$
Answer
Correct option: B.
$2-3\%$
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MCQ 951 Mark
Heparin is:
  • A
    Anti$-$allergic.
  • B
    Blood diluter.
  • ✓
    Anticoagulant.
  • D
    Antiseptic.
Answer
Correct option: C.
Anticoagulant.
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MCQ 961 Mark
Identify the correct statement:
  • ✓
    All arteries carry oxygenated blood from the heart.
  • B
    All veins carry oxygenated blood from the heart.
  • C
    All arteries carry oxygenated blood.
  • D
    All veins carry deoxygenated blood.
Answer
Correct option: A.
All arteries carry oxygenated blood from the heart.
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MCQ 971 Mark
Artificial pace maker is transplanted in:
  • A
    Inter auricular septum.
  • ✓
    Below the collar bone.
  • C
    Inter ventricular septum.
  • D
    Right auricle.
Answer
Correct option: B.
Below the collar bone.
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MCQ 981 Mark
The most abundant tissue of the adenoid tonsils is:
  • A
    Epithelium
  • B
    Reticular connective tissue
  • ✓
    Elastic connective tissue
  • D
    Plasma
Answer
Correct option: C.
Elastic connective tissue
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MCQ 1001 Mark
Match the terms given under Column $‘A\ ’$ with their functions given under Column $‘B\  ’$ and select the answer from the options given below:
  Column $I$   Column $II$
$A$ Lymphatic System $(i)$ Carries oxygenated blood
$B$ Pulmonary vein $(ii)$ Immune Response
$C$ Thrombocytes $(iii)$ To drain back the tissue fluid to the circulatory system
$D$ Lymphocytes $(iv)$ Coagulation of blood
Options:
  • A
    $\text{A-ii, B-i, C-iii, D-iv}$
  • ✓
    $\text{A-iii, B-i, C-iv, D-ii}$
  • C
    $\text{A-iii, B-i, C-iii, D-iv}$
  • D
    $\text{A-ii, B-i, C-iii, D-iv}$
Answer
Correct option: B.
$\text{A-iii, B-i, C-iv, D-ii}$
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MCQ 1011 Mark
Arteries carry oxygenated blood except.
  • ✓
    Pulmonary
  • B
    Cardiac
  • C
    Hepatic
  • D
    Systemic
Answer
Correct option: A.
Pulmonary
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MCQ 1021 Mark
Which of the following proteins is involved in blood clotting?
  • A
    Globulin.
  • B
    Albumin.
  • ✓
    Fibrinogen.
  • D
    Bilirubin.
Answer
Correct option: C.
Fibrinogen.
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MCQ 1031 Mark
Cells which lose their nucleus during differentiation are:
  • A
    Nerve cells
  • B
    Muscle cells
  • ✓
    Erythrocytes
  • D
    Leucocytes
Answer
Correct option: C.
Erythrocytes
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MCQ 1041 Mark
Contraction of heart is:
  • A
    Diastole
  • ✓
    Systole
  • C
    Joint diastole
  • D
    None of the above
Answer
Correct option: B.
Systole
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MCQ 1051 Mark
Which of the following statements is incorrect?
  • A
    A person of $’O\ ’$ blood group has anti $‘A\ ’$ and anti $‘B\ ’$ antibodies in his blood plasma.
  • B
    A person of $’B\ ’$ blood group cannot donate blood to a person of $’A\ ’$ blood group.
  • ✓
    Blood group is designated on the basis of the presence of antibodies in the blood plasma.
  • D
    A person of $AB$ blood group is universal recipient.
Answer
Correct option: C.
Blood group is designated on the basis of the presence of antibodies in the blood plasma.
Blood groups are designated on the basis of antigen present on the surface of their $\text{RBCs}$. e.g., Person with blood group $A$ have antigen $A$ on surface of their $\text{RBCs}$ and antibody $B$ in plasma. Incompatibility during blood transfusion leads to reaction between antigens on the cells and antibodies in plasma, which produces clots that clog Human $\text{ABO}$ blood groups and their compatibility is shown as:
Blood group Geno type Antigens in Red Blood Corpuscles Antibodies in blood plama Can give blood to can get blood from
$A$ $\left|A\right|A$Or $\left|A\right|O$ $A$ $b$ $A,AB$ $A,O$
$B$ $\left.\left.\right|{\mathrm{B}}\right|{\mathrm{B}}$ Or $\left.\left.\right|{\mathrm{B}}\right|{\mathrm{O}}$ $B$ $a$ $B,AB$ $B,O$
$AB$ $\left.\left.\right|A\right|B$ $AB$ None $AB$ All
$O$ $\left.\left.\right|O\right|O$ None $a,b$ All $O$
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MCQ 1061 Mark
Tricuspid valve is found in between:
  • A
    Sinus venosus and right auricle.
  • ✓
    Right auricle and right ventricle.
  • C
    Left ventricle and left auricle.
  • D
    Ventricle and aorta.
Answer
Correct option: B.
Right auricle and right ventricle.
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MCQ 1071 Mark
$\text{AIDS}$ is caused by $\text{HIV}$ that principally infects.
  • A
    All lymphocytes.
  • B
    Activator $B-$cells.
  • ✓
    $T4$ lymphocytes.
  • D
    Cytotoxic $T-$cells.
Answer
Correct option: C.
$T4$ lymphocytes.
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MCQ 1081 Mark
Lymph contains $...........$ proteins than plasma.
  • ✓
    Less
  • B
    More
  • C
    Equal
  • D
    None of the above
Answer
Correct option: A.
Less
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MCQ 1091 Mark
An adult human has systolic and diastolic pressures as :
  • A
    $80\ mm\  Hg$ and $120\ mm\  Hg.$
  • ✓
    $120\ mm\  Hg$ and $80\ mm\  Hg$.
  • C
    $50\ mm\  Hg$ and $80\ mm\  Hg.$
  • D
    $80\ mm\  Hg$ and $80\ mm\  Hg.$
Answer
Correct option: B.
$120\ mm\  Hg$ and $80\ mm\  Hg$.
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MCQ 1101 Mark
A vein possesses a large lumen because:
  • A
    Tunica media and tunica externa form a single coat.
  • B
    Tunica interna and tunica media form a single coat.
  • C
    Tunica interna, tunica media and tunica externa are thin.
  • ✓
    Tunica media is a thin coat.
Answer
Correct option: D.
Tunica media is a thin coat.
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MCQ 1111 Mark

In the above picture $Q$ represents.
  • A
    Exitation of the atria.
  • B
    Depolarisation of ventricles.
  • ✓
    Begining of systole.
  • D
    Repolarisation.
Answer
Correct option: C.
Begining of systole.
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MCQ 1121 Mark
If red blood cells are placed in distilled water, they will:
  • A
    Shrink and collapse
  • ✓
    First increase in volume and then burst
  • C
    Stick together
  • D
    None of the above
Answer
Correct option: B.
First increase in volume and then burst
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MCQ 1131 Mark
Uricotelism is found in:
  • A
    Frogs and toads.
  • B
    Birds, reptiles and insects.
  • C
    Mammals and birds.
  • ✓
    Fishes and fresh water protozoans.
Answer
Correct option: D.
Fishes and fresh water protozoans.
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MCQ 1141 Mark
Which is the first point where blood reaches first from systemic circulation?
  • A
    Right Auricle.
  • B
    Left Auricle.
  • ✓
    Sinus Venosus.
  • D
    Right Ventricle.
Answer
Correct option: C.
Sinus Venosus.
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MCQ 1151 Mark
What would be the cardiac output of a person having $72$ heart beats per minute and a stroke volume of $50\ mL?$
  • A
    $360\ mL$
  • ✓
    $3600\ mL$
  • C
    $7200\ mL$
  • D
    $5000\ mL$
Answer
Correct option: B.
$3600\ mL$
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MCQ 1161 Mark
Glucose is carried from digestive tract to liver by:
  • A
    Pulmonary vein.
  • ✓
    Hepatic portal vein.
  • C
    Hepatic artery.
  • D
    None of the above.
Answer
Correct option: B.
Hepatic portal vein.
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MCQ 1171 Mark
The affinity of $CO$ with $Hb$ is more than oxygen by:
  • A
    $20$ times.
  • B
    Both.
  • ✓
    $2000$ times.
  • D
    None of these.
Answer
Correct option: C.
$2000$ times.
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MCQ 1181 Mark
The beating of the heart in a human being is heard on the left side because:
  • A
    Both the atria are towards the left side.
  • ✓
    Both the ventricles are towards the left side.
  • C
    Entire heart is on the left side.
  • D
    The aorta is on the left side.
Answer
Correct option: B.
Both the ventricles are towards the left side.
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MCQ 1191 Mark
The valve that guards the opening between right atrium and right ventricle, is called:
  • ✓
    Tricuspid valve.
  • B
    Mitral valve.
  • C
    Bicuspid valve.
  • D
    Semilunar valve.
Answer
Correct option: A.
Tricuspid valve.
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MCQ 1201 Mark
The vein that supplies nutrients from the intestine to the liver, is:
  • A
    Hepatic vein.
  • B
    Inferior vena cava.
  • ✓
    Epatic portal vein.
  • D
    Renal portal vein.
Answer
Correct option: C.
Epatic portal vein.
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MCQ 1211 Mark
Which one of the following is not related to the clotting of blood?
  • A
    Fibrin
  • B
    Fibrinogen
  • C
    $Ca^{++}$
  • ✓
    $Na^+$ of the plasma
Answer
Correct option: D.
$Na^+$ of the plasma
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MCQ 1221 Mark
Which is the last point from where blood goes from the heart to systemic circulation?
  • ✓
    Left Ventricle.
  • B
    Right Ventricle.
  • C
    Left Auricle.
  • D
    Right Auricle.
Answer
Correct option: A.
Left Ventricle.
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MCQ 1231 Mark
Thromboplastin required in blood clotting is secreted by:
  • A
    Monocytes
  • B
    Lymphocytes
  • C
    Erythrocytes
  • ✓
    Platelets
Answer
Correct option: D.
Platelets
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MCQ 1241 Mark
Which of the following statement is correct?
  • A
    Deoxygenated blood is poured into right atrium of heart.
  • B
    The excretory units of flat worms are flame cells.
  • C
    Human kidney has about $1$ million nephridia.
  • ✓
    Both $A$ and $B.$
Answer
Correct option: D.
Both $A$ and $B.$
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MCQ 1251 Mark
In humans, blood passes from the post caval to the diastolic right atrium of heart due to:
  • ✓
    Pressure difference between the post caval and atrium.
  • B
    Pushing open of the venous valves.
  • C
    Suction pull.
  • D
    Stimulation of the sino auricular node.
Answer
Correct option: A.
Pressure difference between the post caval and atrium.
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MCQ 1261 Mark
The pattern of contraction and relaxation of the heart is referred to as:
  • A
    Arterial flow.
  • ✓
    Caardiac cycle.
  • C
    Blood pressure.
  • D
    Blood flow.
Answer
Correct option: B.
Caardiac cycle.
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MCQ 1271 Mark
If a person stays on Mount Everest for some days:
  • A
    His body will step up production of $\text{RBC}$
  • ✓
    His body will step down production of $\text{RBC}$
  • C
    Number of $\text{RBC}$ will not change
  • D
    His $\text{RBC}$ will turn into very large cells
Answer
Correct option: B.
His body will step down production of $\text{RBC}$
Even at moderate elevations, many people experience headaches and shortness of breath due to lower oxygen concentrations at that level. However, if they stay at that elevation, the body will compensate by producing more red blood cells and all functions will return to normal.
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MCQ 1281 Mark
In a standard $\text{ECG}$ which one of the following alphabets is the correct representation of the respective activity of the human heart?
  • A
    $T-$end of diastole.
  • ✓
    $P-$depolarisation of the atria.
  • C
    $R-$repolarisation of ventricles.
  • D
    $S-$start of systole.
Answer
Correct option: B.
$P-$depolarisation of the atria.
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MCQ 1291 Mark
Which artery supplies blood to the heart muscle?
  • A
    Pulmonary artery.
  • B
    Systemic artery.
  • C
    Carotid artery.
  • ✓
    Coronary artery.
Answer
Correct option: D.
Coronary artery.
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MCQ 1301 Mark
The average diameter of red blood corpuscles of man is:
  • ✓
    $7.2\ \mu m$
  • B
    $8.1\ \mu m$
  • C
    $9.2\ \mu m$
  • D
    $10.3\ \mu m$
Answer
Correct option: A.
$7.2\ \mu m$
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MCQ 1311 Mark
Antibodies in our body are complex.
  • A
    Lipoproteins
  • B
    Steroids
  • C
    Prostaglandins
  • ✓
    Glycoproteins
Answer
Correct option: D.
Glycoproteins
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MCQ 1321 Mark
A siderocyte is a $\text{RBC}$ containing:
  • ✓
    Pappenheimer bodies
  • B
    Russell bodies
  • C
    Herring's bodies
  • D
    Schuffner's dots
Answer
Correct option: A.
Pappenheimer bodies
A siderocyte is an abnormal $\text{RBC}$ that has iron granules that are not part of haemoglobin. Pappenheimer bodies are the abnormal granules of iron found in the $\text{RBCs}$ on routine blood stain. They are a type of inclusion body formed by phagosomes, that have engulfed excessive amounts of iron.
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MCQ 1331 Mark
What is the normal blood pressure of human beings?
  • A
    $\frac{110}{70}$
  • B
    $\frac{120}{70}$
  • ✓
    $\frac{120}{80}$
  • D
    $\frac{110}{80}$
Answer
Correct option: C.
$\frac{120}{80}$
$\frac{120}{80}$ is the normal measurement to blood pressure.
$22\ \text{mm Hg}$ is the systolic or pumping pressure.
$80\ \text{mm Hg}$ is the diastolic or resting pressure.
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MCQ 1341 Mark
Arteries are best defined as the vessels which:
  • A
    Carry blood from one visceral organ to another visceral organ.
  • B
    Supply oxygenated blood to the different organs.
  • ✓
    Carry blood away from the heart to different organs.
  • D
    Break up into capillaries which reunite to form a vein.
Answer
Correct option: C.
Carry blood away from the heart to different organs.
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MCQ 1351 Mark
Erythrocytes in camel are:
  • A
    Oval and non$-$nucleated
  • ✓
    Oval and nucleated
  • C
    Circular, biconcave and non$-$nucleated
  • D
    Circular, biconvex and nucleated
Answer
Correct option: B.
Oval and nucleated
Camels have to live without food and water for a long time. Their $\text{RBCs}$ have an oval shape unlike those of other mammals, which are circular. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water.
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MCQ 1361 Mark
Which of the following organisms has an open circulatory system?
  • A
    Fish.
  • B
    Frog.
  • C
    Crocodile.
  • ✓
    Hydra.
Answer
Correct option: D.
Hydra.
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MCQ 1371 Mark
Which one of the following statements about blood constituents and transport of respiratory gases is most accurate?
  • A
    $\ce{RBCs}$ transport oxygen whereas $\ce{WBCs}$ transport $\ce{CO_2}$.
  • B
    $\ce{RBCs}$ transport oxygen whereas plasma transports only $\ce{CO_2}$.
  • C
    $\ce{RBCs}$ as well as $\ce{WBCs}$ transport both oxygen and $\ce{CO_2}$.
  • ✓
    $\ce{RBCs}$ as well as plasma transport both oxygen and $\ce{CO_2}$.
Answer
Correct option: D.
$\ce{RBCs}$ as well as plasma transport both oxygen and $\ce{CO_2}$.
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MCQ 1381 Mark
Cardiac arrest is the state when:
  • ✓
    Heart stops beating.
  • B
    Inadequate blood supply to the heart.
  • C
    Heart not pumping enough to meet the body needs.
  • D
    Blood pressure increases.
Answer
Correct option: A.
Heart stops beating.
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MCQ 1391 Mark
Which one of the following human cells does not contain mitochondria?
  • A
    Nerve cell
  • ✓
    Red blood cell
  • C
    Liver cell
  • D
    White blood cell
Answer
Correct option: B.
Red blood cell
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MCQ 1401 Mark
An adult human with average health has systolic and diastolic pressures as :
  • A
    $70\ mm\  Hg$ and $120\ mm\  Hg.$
  • B
    $80\ mm\  Hg$ and $80\ mm\  Hg.$
  • ✓
    $120\ mm\  Hg$ and $80\ mm\  Hg.$
  • D
    $50\ mm\  Hg$ and $80\ mm\  Hg.$
Answer
Correct option: C.
$120\ mm\  Hg$ and $80\ mm\  Hg.$
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MCQ 1411 Mark
Mark the pair of substances among the following which is essential for coagulation of blood:
  • A
    Heparin and calcium ions.
  • ✓
    Calcium ions and platelet factors.
  • C
    Oxalates and citrates.
  • D
    Platelet factors and heparin.
Answer
Correct option: B.
Calcium ions and platelet factors.
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MCQ 1421 Mark
If you suspect major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidence?
  • A
    Serum albumins.
  • ✓
    Serum globulins.
  • C
    Fibrinogen in the plasma.
  • D
    Haemocytes.
Answer
Correct option: B.
Serum globulins.
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MCQ 1431 Mark
$\text{ECG}$ records:
  • A
    Electric current of the body
  • B
    Potential differences
  • C
    Pulse rate
  • ✓
    Both $A$ and $B$
Answer
Correct option: D.
Both $A$ and $B$
As the heart undergoes depolarization and repolarization, the electrical currents that are generated spread not only within the heart, but also throughout the body. This electrical activity generated by the heart can be measured by electrodes placed on the body surface. The recorded tracing is called an electrocardiogram.
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MCQ 1441 Mark
Which of the following statements is true for lymph?
  • A
    $\text{WBC}$ and serum.
  • ✓
    All components of blood except $\text{RBCs}$ and some proteins.
  • C
    $\text{RBCs, WBCs}$ and plasma.
  • D
    $\text{RBCs}$, proteins and platelets.
Answer
Correct option: B.
All components of blood except $\text{RBCs}$ and some proteins.
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MCQ 1461 Mark
$\text{ECG}$ depicts the depolarisation and repolarisation processes during the cardiac cycle. In the $\text{ECG}$ of a normal healthy individual one of the following waves is not represented:
  • A
    Depolarisation of atria.
  • ✓
    Repolarisation of atria.
  • C
    Depolarisation of ventricles.
  • D
    Repolarisation of ventricles.
Answer
Correct option: B.
Repolarisation of atria.
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MCQ 1471 Mark
Read the following statements and choose the correct option
Statement $1:$ Atria receive blood from all parts of the body which subsequently flows to ventricles.
Statement $2:$ Action potential generated at sino$-$atrial node passes from atria to ventricles.
  • A
    Action mentioned in Statement $1$ is dependent on action mentioned in Statement $2.$
  • B
    Action mentioned in Statement $2$ is dependent on action mentioned in Statement $1.$
  • C
    Action mentioned in Statements $1$ and $2$ are independent of each other.
  • ✓
    Action mentioned in Statements $1$ and $2$ are synchronous.
Answer
Correct option: D.
Action mentioned in Statements $1$ and $2$ are synchronous.
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MCQ 1481 Mark
The bicuspid and tricuspid valves close at the start of:
  • A
    Atrial systole.
  • ✓
    Ventricular systole.
  • C
    Atrial diastole.
  • D
    Ventricular diastole.
Answer
Correct option: B.
Ventricular systole.
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MCQ 1491 Mark
The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse is:
  • A
    (a)
    SA Node
    AV Node
    Purkinje fiber
    AV Bundle
  • B
    (b)
    SA Node
    Purkinje fiber
    AV Node
    AV Bundle
     
  • ✓
    (c)
    SA Node
    AV Node
    AV Bundle
    Purkinje fiber
  • D
    (d)
    SA Node
    Purkinje fiber
    AV Bundle
    AV Node
Answer
Correct option: C.
(c)
SA Node
AV Node
AV Bundle
Purkinje fiber
Explanation:
SA Node It is situated in the walls of the right auricle near the opening of the superior vena cava. In myogenic heart the contraction is initiated by SA node. AV Node The wave of contraction reaches AV node which is stimulated to emit an impulse of contraction spreading to the ventricular muscle via the atrio ventricular bundle and then to the Purkinje fibres stimulating heart beat.
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MCQ 1501 Mark
Which of the following substances, if introduce in the blood stream, would cause coagulation, at the site of its introduction?
  • A
    Fibrinogen
  • B
    Fibrinogen
  • C
    Heparin
  • ✓
    Thromboplastin
Answer
Correct option: D.
Thromboplastin
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MCQ 1511 Mark
Splenic artery arises from:
  • A
    Anterior mesenteric artery.
  • ✓
    Coeliac artery.
  • C
    Posterior mesenteric artery.
  • D
    Intestinal artery.
Answer
Correct option: B.
Coeliac artery.
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MCQ 1521 Mark
What is true about $T-$lymphocytes in mammals?
  • A
    They scavenge damaged cells and cellular debris.
  • B
    These are produced in thyroid.
  • ✓
    There are of three main types$-$cytotoxic $T-$cells, helper $T-$cells and suppressor $T-$cells.
  • D
    These originate in lymphoid tissues.
Answer
Correct option: C.
There are of three main types$-$cytotoxic $T-$cells, helper $T-$cells and suppressor $T-$cells.
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MCQ 1531 Mark
Agranulocytes responsible for immune healthy individual one of the following waves is not represented. Response of the body are
  • A
    basophils.
  • B
    neutrophils.
  • C
    eosinophils.
  • ✓
    lymphocytes.
Answer
Correct option: D.
lymphocytes.
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MCQ 1541 Mark
Heart is covered by:
  • A
    Visceral membrane.
  • B
    Pleural membrane.
  • ✓
    Pericardium.
  • D
    None of these.
Answer
Correct option: C.
Pericardium.
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MCQ 1551 Mark
Which of the following does not help in clotting of blood?
  • ✓
    Heparin
  • B
    Prothrombin
  • C
    $Ca^{2+}$
  • D
    Exposure to $O_2$
Answer
Correct option: A.
Heparin
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MCQ 1561 Mark
The arterial wall is thicker than that of veins, due to a comparatively thicker layer of:
  • A
    Tunica intima.
  • ✓
    Tunica media.
  • C
    Tunica externa.
  • D
    Pericardium.
Answer
Correct option: B.
Tunica media.
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MCQ 1571 Mark
Fastest distribution of some injectible material$/$ medicine and with no risk of any kind can be achieved by injecting it into the:
  • ✓
    Veins.
  • B
    Arteries.
  • C
    Lymph vessesls.
  • D
    Muscles.
Answer
Correct option: A.
Veins.
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