Which one of the following statements is correct?
1. Increased ventricular pressure causes closing of the semilunar valves.
2. The atrio-ventricular node (AVN) generates an action potential to stimulate atrial contraction.
3. The tricuspid and the bicuspid valves open due to the pressure exerted by the simultaneous contraction of the atria.
4. Blood moves freely from atrium to the ventricle during joint diastole.
Subtopic:  Human Heart: Cardiac Cycle |
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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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 |
 59%
From NCERT
NEET - 2019
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh