Question

Bicuspid and tricuspid valves are closed during

• A. Ventricular systole
• B. Ventricular diastole
• C. Atrial systole
• D. Late joint diastole

Answer 1

The correct option is A

Ventricular systole

The correct answer is A:

Bicuspid valves:

1. It is a valve that is present between the left atrium and left ventricle of the heart. It consists of two cusps.

Tricuspid valves:

1. It is a valve that is present between the right atrium and ventricle of the heart. It consists of three cusps.

Ventricular systole:

1. It is a period of contractions of the ventricles present in a heart during the cardiac cycle.
2. The increased ventricular pressure during ventricular systole causes closure of the bicuspid & tricuspid valves to avoid the backflow of blood into the atria.

Option B:

1. It is a period of relaxation of the ventricles present in a heart during the cardiac cycle.