Arrange the following events of the cardiac cycle in the correct sequence:
1. Ventricular systole
2. Joint diastole (relaxation of atria and ventricles)
3. Atrial systole
4. Closure of semilunar valves
Options:
1. 3 → 1 → 4 → 2 2. 2 → 3 → 1 → 4
3. 1 → 3 → 4 → 2 4. 4 → 2 → 1 → 3
Subtopic:  Human Heart: Cardiac Cycle |
 55%
From NCERT
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The correct statements amongst the following are:

I: Cardiac output is volume of blood pumped by each ventricle per minute
II: All the four chambers of human heart are never in diastole together
III: The first heart sound is associated with opening of atrioventricular valves
IV: The pressure in pulmonary artery is equal to the pressure in aorta
 
1. Only I 2. Only I and IV
3. Only I and III 4. Only I, II and IV
Subtopic:  Human Heart: Cardiac Cycle |
From NCERT
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The volume of blood pumped out by each ventricle per minute is called as the:
1. stroke volume
2. ejection fraction
3. cardiac output 
4. end diastolic volume
Subtopic:  Human Heart: Cardiac Cycle |
 53%
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What event occurs during the joint diastole in the human heart?
1. Opening of AV valves 
2. Closure of AV valves
3. Opening of semilunar valves
4. Closure of semilunar valves
Subtopic:  Human Heart: Cardiac Cycle |
 56%
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What would be the heart rate of a person if the cardiac output is 5L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?

1. 125 beats per minute 2. 50 beats per minute
3. 75 beats per minute 4. 100 beats per minute
Subtopic:  Human Heart: Cardiac Cycle |
 60%
From NCERT
NEET - 2019
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NEET 2026 - Target Batch - Vital
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If the heart rate is 60 per minute, the duration of each cardiac cycle will be:

 
1. 0.8 seconds 2. 0.75 seconds
3. 1.0 second 4. 1.2 second
Subtopic:  Human Heart: Cardiac Cycle |
 56%
From NCERT
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