The valve prevents backward flow into the right atrium.
a) pulmonic
b) semicaval
c) tricuspid
d) bicuspid
e) semilunar

Option D) bicuspid

Explanation:

The bicuspid valve is also called mitral valve which is located between the left ventricle and left atrium of the heart.

The bicuspid valve serves a very important function that is to maintain blood flow in right direction that is from atrium to ventricle.

During blood flow the bicuspid valve gets open when the blood fills in left ventricle from the atrium and the bicuspid valve gets closed or sealed when the left ventricle pumps in order to prevent the blood from going in back into the left atrium. This maintains the high blood pressure of the left ventricle from the very low pressure of the pulmonary circulation.

Hence, the correct option is bicuspid valve.

uhhh ok

explanation: