What is the pulmonary valve?
The pulmonary valve is called the pulmonary valve. Gray's Anatomy (1918) describes it as a three-cusp valve at the base of the pulmonary trunk.
What it is
- A three-cusp valve at the base of the pulmonary trunk.
- Prevents blood from flowing back into the right ventricle.
- Opens with each ventricular contraction and closes as the ventricle relaxes.
Where it is
- Between the right ventricle and the pulmonary trunk.
- Sits at the top of the right ventricle.
- Its closure contributes to the second heart sound.
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Last verified: 2026-07-18
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