Healthsheet

Understanding Heart Valves

Understanding Heart Valves

Closed valve
The valve closes to stop blood from leaking back.

Open valve
The valve opens to let blood move forward.

The heart contains four valves. The valves open and close to keep blood moving in the right direction through the heart. As the heart beats, blood moves through it. With each squeeze, the valves open and close to keep blood moving forward. In this way, valves keep blood moving as efficiently as possible through the heart.


Image of how heart works



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