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Zoology MCQs for NEET — Practice Questions with Answers

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The results of ECG are known as

Electrocardiogram

Electrocardiograph

MRI

Biopsy

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Explanation

NCERT, P -285, ECG

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The standard ECG is obtained by connecting the patient to the machine with how many leads?

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Explanation

NCERT, P -286, Para 1

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If one wants to analyse the detailed cardiac activity, the multiple leads are attached to–

Wrist and arms

Abdomen

Chest region

all the fingers

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Explanation

NCERT, P -286, Para 1

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What does the QRS complex represent in ECG?

Atrial Diastole

Atrial systole

ventricular systole

Joint Diastole

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Explanation

NCERT, P -286, Para 4

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What does the T wave represents in ECG?

Atrial Diastole

Atrial systole

ventricular Diastole

Joint Diastole

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Explanation

NCERT, P -286, Para 5

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What does the depolarization of ventricles initiate?

Atrial Diastole

Atrial systole

ventricular systole

Joint Diastole

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Explanation

NCERT, P -286, Para 4

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By counting number of QRS complex, one may get which information?

Rate of breathing

cardiac output

Heart beat rate

stroke volume

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Explanation

NCERT, P -286.

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The deviation from the characteristic ECG indicates a possible abnormality; this information can be utilized in which field of Biology?

Clinical Biology

Biotechnology

Molecular Biology

Pedigree analysis

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Explanation

NCERT, P -286, Para 6

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Depolarisation and repolarisation actually initiate ___________ in different chambers of heart?

contraction and relaxation

relaxation and contraction

thickening and thinning

thinning and thickening

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Explanation

Depolarization will result in systole or contraction while repolarization will result in relaxation or diastole.

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Which wave of ECG represents repolarization?

P wave

QRS complex

ST wave

T wave

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Explanation

NCERT, P -286, Para 5

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