Pacemaker of heart is:
- A$\text{AV}$ node.
- BBundle of His.
- ✓$\text{SA}$ node.
- DPurkinje fibres.
Answer: C.
View full solution →Question types
Body Fluids and Circulation question types
389 questions across 5 question groups — pick any mix to generate a BIOLOGY paper with step-by-step answer keys.
389
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5
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01
M.C.Q (1 Marks)
157 Q→021 Marks Question
107 Q→032 Marks Questions
57 Q→043 Marks Question
41 Q→055 Marks Questions
27 Q→Sample Questions
Body Fluids and Circulation questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Lymph is colourless due to the:
- AAbsence of $\text{WBC}$
- BPresence of $\text{WBC}$
- CAbsence of platelets
- ✓Absence of $\text{RBC}$
Answer: D.
View full solution →Which one of the following types of cells lack nucleus in humans?
- AErythrocytes.
- ✓Neutrophils.
- CEosinosphils.
- DMonocytes.
Answer: B.
View full solution →Which of the following is also called the pacemaker of the heart?
- ✓$\text{SA}$ Node.
- BBundle of His.
- CPurkinje fibres.
- DMytral Valve.
Answer: A.
View full solution →In veins, values are present to check backward flow to blood flowing at:
- ✓Low pressure.
- BHigh pressure.
- CAtmospheric pressure.
- DNone of these.
Answer: A.
View full solution → Name the blood component which is viscous and straw coloured fluid.
Where does the cardiac impulse originate?
How is the rate of heart beat determined from the ECG?
A fish's heart pumps only deoxygenated blood, why?
Give the path of pulmonary circulation.
Why do we call our heart myogenic?
Explain heart sounds.
In the diagrammatic presentation of heart given below, mark and label, SAN, AVN, AV bundles, bundle of His and Purkinje fibres. 
Name the unique vascular connection between digestive tract and the liver. What is its significance?
Radhika's aunt has a five year old daughter and is pregnant for the second time. Her first daughter is $\mathrm{Rh}^{+}$and she is Rh: When her doctor came to know about that she is Rh; she gave her an anti-Rh antibodies injection. She felt depressed and asked her neighbour (who was a biology professor). She councilled Radhika's aunt and explained her that it is all about Rh factor and Rh incompatibility. She told Radhika's aunt that medicines are now available to take care of consequences of incompatibility.
i. What do you mean by $\mathrm{Rh}^{-}$and $\mathrm{Rh}^{+}$?
ii. What problems Radhika's aunt can be face in the second pregnancy? Explain with reasons.
iii. What value(s) is/ are shown by Radhika's neighbour in explaining?
View full solution →i. What do you mean by $\mathrm{Rh}^{-}$and $\mathrm{Rh}^{+}$?
ii. What problems Radhika's aunt can be face in the second pregnancy? Explain with reasons.
iii. What value(s) is/ are shown by Radhika's neighbour in explaining?
What is the importance of plasma proteins?
Name the components of the formed elements in the blood and mention one major function of each of them.
Sino-atrial node is called the pacemaker of our heart. Why?
What is the difference between lymph and blood?
Write the differences between: Blood and Lymph.
Define a cardiac cycle and the cardiac output.
Write the differences between: P-wave and T-wave.
What is the significance of atrio-ventricular node and atrio-ventricular bundle in the functioning of heart?
Write the differences between: Open and Closed system of circulation.
Draw a standard ECG and explain the different segments in it.
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