Atrioventricular Valve

What is Atrioventricular Valve?

An atrioventricular valve is a one-way valve between an atrium and the ventricle below it. It is pushed open when atrial pressure is higher than ventricular pressure, allowing blood to flow into the ventricle, and is pushed shut when the ventricle contracts and ventricular pressure rises above atrial pressure, which prevents blood flowing backwards into the atrium. The valve is passive: it is moved by pressure differences and does not contract.

This definition is part of the Transport in Humans chapter in Cambridge O Level Biology.

Concepts related to Atrioventricular Valve

• semilunar valve
• backflow
• pressure difference