Draw a standard ECG and explain the different segments in it. - Vidyadip

Question

Draw a standard ECG and explain the different segments in it.

✓

Answer

Electrocardiography is an important medical technique used to study electrical signals generated by the active states of the heart's muscles and tissues. These signals are recorded using a device called an electrocardiogram (ECG). In this procedure, by applying conducting jelly, three electrodes of the device are placed sequentially on the patient's chest, wrist, and legs. The obtained electrical signals, which are of a diminished nature, are amplified by the appropriate system in the device and recorded as a sensitive chart record.
An ECG captures electrical activities during the contraction and relaxation of different chambers of the heart as certain wave patterns, represented as PQRS and T-waves. Each wave indicates a specific condition in the heart's muscles.

Fig. Schematic Diagram of Human ECG
It provides information about abnormalities in the heart. ECG aids in diagnosing heart-related conditions such as coronary thrombosis, angina pectoris. cardiomyopathy, myocarditis, and others.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "4 Marks Questions" from PART - 2 - Unit V : CH - 15 Body Fluids and Circulation→PART - 2 - Unit V : CH - 15 Body Fluids and Circulation — all question types→BIOLOGY STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Write the names of four groups of bacteria on the basis of shape. Name any four diseases caused by bacteria and draw any two picture of bacteria.

The process to standardize the naming of living organisms is called nomenclature. Obviously, the nomenclature is only possible when the organism is described correctly and we know to what organism the name is attached to this is identification. The system of providing scientific name with two components is called Binomial Nomenclature. The scientific name ensures that each organism is identified by only one name all across the world. They also ensures that such a name has not been used for any other known organism. Scientific names for plants are provided in ICBN and for animals, in ICZN.

(1). Who proposed binomial nomenclature?
(A) Carolus Linnaeus (B) Charles Darwin (C) Francis crick (D) Albert Einstein

(2)Which of the following is an example of binomial scientific name?
(A) Green algae (B) Rana tigrina (C) Snow leopard (D) China rose

(3). In binomial nomenclature, the name of organism consists of
(A) kingdom (B) genus (C) species (D) Both B and C

(4). ICBN stands for
(A) Internal botanical congress names
(B) International center of botanical names
(C) International code of botanical nomenclature
(D) Internal code of botanical nomenclature

(5). In binomial nomenclature,------- epithet starts with small letter
(A) Genus
(B) Species
(C) Both A and B
(D) None of the above

Write four differences between lined and unlined sutures.

As what is Equisetum commonly known? Write any four differences between Bryophytes and Pteridophytes.

Sarcodines are unicellular/jelly-like protozoa found in fresh or sea water and in moist soil. Their body lacks a periplast. Therefore, they may be naked or covered by a calcareous shell. They usually lack flagella and have temporary protoplasmic outgrowths called pseudopodia. These pseudopodia or false feet help in movement and capturing prey. They include free-living forms such as Amoeba or parasitic forms such as Entamoeba. Zoo flagellates ciliates and I sporozoans are other groups of protozoan protists. They are all unicellular and heterotrophic. They may be holozoic, saprobic or parasitic.

i. Write two lines about flagellated protozoans and also mention some flagellated protozoans. (1)
ii. Observe the given protozoan classification and mention what is the basis of protozoan classification. (1)
iii. Mention some locomotory organs of protozoa. (2)

OR

Which protozoan group has two nuclei, macronucleus, and micronucleus? Mention characteristics of it. (2)

→

Write any four differences between Agnatha and Gnathostomata.

Write the differences between:
Blood and Lymph

The flower is the reproductive unit in the angiosperms. It is meant for sexual reproduction. A typical flower has four different kinds of whorls arranged successively on the swollen end of the stalk or pedicel, called thalamus or receptacle. These are calyx, corolla, androecium and gynoecium. Calyx and corolla are accessory organs, while androecium and gynoecium are reproductive organs. In symmetry, the flower may be actinomorphic (radial symmetry) or zygomorphic (bilateral symmetry). Based on the position of calyx, corolla and androecium in respect of the ovary on the thalamus, the flowers are described as hypogynous, perigynous and epigynous. A flower may be trimerous, tetramerous or pentamerous when the floral appendages are in multiple of 3, 4 or 5, respectively.

i. Observe the diagram given below. and mention what happens after the given stage. (1)
ii. Is Actinomorphic datura the incorrect match? (1)
iii. When the ovary is superior it is called? (2)

OR

Which of the following represents epigynous? Also, mention what an epigynous flower is (2)

→

Try to collect all the currently accepted meanings for the word 'species'. Discuss with your teacher the meaning of species in case of higher plants and animals on one hand, and bacteria on the other hand.

Briefly describe the structure of the Brain.