Algonquin College Health Program Assessment (AC-HPAT) Practice Exam

What is the name of the valve located between the left atrium and left ventricle?

1. Tricuspid valve

2. Bicuspid/Mitral valve

3. Aortic valve

4. Pulmonary valve

The correct answer is: Bicuspid/Mitral valve

The valve located between the left atrium and the left ventricle is known as the Bicuspid valve, also commonly referred to as the Mitral valve. This valve plays an essential role in the cardiac cycle by ensuring that oxygen-rich blood flows in a unidirectional manner from the left atrium into the left ventricle. During the heart's contraction (systole), the Bicuspid valve closes to prevent backflow of blood into the atrium, ensuring it is efficiently pumped out into the aorta and then distributed throughout the body. The unique structure of the Bicuspid valve features two flaps or cusps (hence the name "bicuspid"), which distinguishes it from other valves in the heart, like the Tricuspid valve, which has three cusps. Understanding the function and location of the Bicuspid/Mitral valve is crucial for comprehending how blood circulates through the heart and the overall cardiovascular system, as it directly affects the efficiency of heart function and blood flow.