Question

Bicuspid valve is present in the human heart in between which of the following?
A. Right atrium and right ventricle
B. Left atrium and left ventricle
C. Right and left atria
D. Left atrium and systemic aorta

Answer 1

Hint: A heart valve is a one-way valve that permits blood to pass through the heart only in one direction. The four valves that regulate the course of blood flow through the heart are often shown in a mammalian heart. Differential blood pressure on each side determines whether a heart valve opens or closes. The bicuspid valve, one of the heart’s four valves, is located between the left atrium and the left ventricle. It only allows blood to flow from the left atrium to the left ventricle in one direction.

Complete answer:
Option A Right atrium and right ventricle: Between the right atrium and the right ventricle is the tricuspid valve. Its job is to ensure that blood flows from the right atrium to the ventricle in a forward direction. The tricuspid valve’s faulty function is referred to as tricuspid valve disease. Since the valve present between the right atrium and right ventricle is not a bicuspid valve, option A is not correct.
Option B Left atrium and left ventricle: The mitral valve, also known as the bicuspid valve or left atrioventricular valve, is a two-flap valve that connects the left atrium with the left ventricle in the heart. Because they are located between the atria and the ventricles of the heart, the mitral and tricuspid valves are referred to as the atrioventricular valves. Hence option B is the correct answer.
Option C Right and left atria: There is no valve connecting both right and left atria. Hence option C is not correct.
Option D Left atrium and systemic aorta: There is no valve connecting both left atrium and systemic aorta. Hence option D is not correct.

Hence, option B. Left atrium and left ventricle is the correct answer

Note:
The atria and ventricles, or the ventricles and a blood vessel, are separated by heart valves. The fibrous rings of the cardiac skeleton surround the heart valves. The valves have flaps called leaflets or cusps that are pulled open to enable blood flow and then closed together to seal and prevent backflow, similar to a duckbill valve or flutter valve. There are two cusps on the mitral valve, whereas the others have three.