Which one of the following guards the opening between the left atrium and the left ventricle?

AMitral valve

BInter atrial septum

CTricuspid valve

DInter ventricular septum

Answer:

The heart valves are responsible for maintaining the blood flow in the right direction within the heart.
These structures consist of flaps or leaflets, which open and close once per heartbeat and prevent the backflow of blood.
Bicuspid valve :
The bicuspid valve or the mitral valve is located between the left atrium and the left ventricle.
It prevents the backflow of blood as the blood flows from the left atrium to the left ventricle. Hence, the bicuspid valve guards the opening between the left atrium and the left ventricle.

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