Body Atlas

The Four Valves · Heart

How can a valve work without muscles?

The exit gate from the right ventricle toward the lungs.

The simple answer

When blood leaves the right side of your heart for your lungs, it passes through one more door: the pulmonary valve.

Go deeper

There's more: the exit gate from the right ventricle toward the lungs. The full explanation — and the interactive version you can tap and quiz yourself on — lives in the app.

Explore this concept in Body Atlas →

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