The duration of cardiac cycle is–

(1) 0.8 second

(2) 0.5 second

(3) 0.3 second

(4) 0.4 second

Subtopic:  Human Heart: Cardiac Cycle |
 97%
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The number of action potential generated by SAN:

(1) 70–75 times per minute.

(2) 50–72 times per minute.

(3) Exact 70 times per minute.

(4) not more than 60 times per minute.

Subtopic:  Rhythmic Excitation of Human Heart: Part 1 |
 96%
From NCERT
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The route of action potential in heart is

(1) SA node – AV node – AV bundle

(2) AV node – SA node – bundle of his – AV bundle

(3) SA node – AV node – AV bundle – Bundle of His

(4) SA node – AV node – Purkinje fibres

Subtopic:  Rhythmic Excitation of Human Heart: Part 1 |
 79%
From NCERT
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If the stroke volume of Human heart is considered 80 mL and to pump 5L of blood how many beats are required?

(1) 63

(2) 70

(3) 72

(4) 60

Subtopic:  Human Heart: Cardiac Cycle |
 59%
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The lub sound of heart is produced during which phase of cardiac cycle?

(1) ventricular systole

(2) atrial diastole

(3) joint diastole

(4) atrial systole

Subtopic:  Human Heart: Cardiac Cycle |
 67%
From NCERT
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The sequence of opening (O) and closing (C) of heart –valves are:

(1) AV valves open before the closure of SL or semilunar valves.

(2) AV valves close before the closure of SL or semilunar valves.

(3) AV valves open after the closure of SL or semilunar valves.

(4) AV valves close with closure of SL or semilunar valves.

Subtopic:  Human Heart: Cardiac Cycle |
 52%
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The machine taking the reading of electrical activity of heart is known as

(1) Electrocardiogram

(2) Electrocardiograph

(3) MRI

(4) Biopsy

Subtopic:  ECG & Coronary Artery Disease |
 75%
From NCERT
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The results of ECG are known as

(1) Electrocardiogram

(2) Electrocardiograph

(3) MRI

(4) Biopsy

Subtopic:  ECG & Coronary Artery Disease |
 78%
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The standard ECG is obtained by connecting the patient to the machine with how many leads?

(1) 4

(2) 3

(3) 1

(4) 2

Subtopic:  ECG & Coronary Artery Disease |
 83%
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If one wants to analyse the detailed cardiac activity, the multiple leads are attached to–

(1) Wrist and arms

(2) Abdomen

(3) Chest region

(4) all the fingers

Subtopic:  ECG & Coronary Artery Disease |
 69%
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