Which valve is located between the left atrium and left ventricle?

• A. Tricuspid valve
• B. Mitral valve
• C. Aortic valve
• D. Pulmonary valve

Answer: (B)

The valve between the left atrium and left ventricle is the mitral valve. It opens to allow blood to move from the left atrium into the left ventricle during filling, and it closes as the ventricle contracts to prevent blood from flowing back into the atrium. This valve is also known as the bicuspid valve. It sits on the left heart, unlike the tricuspid valve (between the right atrium and right ventricle) and the aortic and pulmonary valves, which control flow out of the ventricles into the aorta and pulmonary artery, respectively. The mitral valve’s proper function helps ensure one-way blood flow and efficient pumping of the left side of the heart.