Bicuspid and tricuspid valves are open during

Ventricular systole

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Ventricular diastole

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Atrial systole

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Late joint diastole

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Solution

The correct option is C Atrial systole
Atrial systole occurs at the end of ventricular diastole. After the ventricle has pumped its blood, it begins to relax. There is now negative pressure in the ventricle (since it is now empty), and this pressure helps to draw in the blood from the atrium when it enters into systole. So during atrial systole, the bicuspid and tricuspid valves are open, and the pulmonary/aortic semilunar valves are closed. Then during the diastole, the bicuspid and tricuspid valves are closed.

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Similar questions

Q. When does the blood enter in Atria. Choose the correct:-
(a) During generation of impulse from SAN
(b) Atrial relaxation
(c) As the tricuspid and bicuspid valves are open
(d)Joint diastole

The second heart sound (dubb) is associated with the closure of ?
(a) tricuspid valve
(b) semilunar valve
(c) bicuspid valve
(d) tricuspid and bicuspid valve

Q. Which of the following events do not occur during joint diastole?

(I) All four–chambers are in relaxed state

(II) Tricuspid and bicuspid are open

(III) Semilunar valves are closed

(IV) Blood from the pulmonary veins and vena cava flows into the left and right ventricles, respectively through the left and right atria

Q. The fibrous cords that connect tricuspid and bicuspid valves with the inner surface of ventricles are

Q. Why heart has valves at all the apertures? Write about the bicuspid and tricuspid valves.

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