Aortic valve

This section is about
Structures of the Heart

The aortic valve is one of the semilunar valves of the the heart, the other semilunar valve being the pulmonary valve.

The aortic valve consists of three pockets shaped like half-moons. Its function is to prevent blood that is leaving the heart via the left ventricle (into the aorta), from flowing backwards, so re-entering the heart.

This is important because backflow of blood through an incompletely closed valve such as the aortic valve (a condition known as 'regurgitation') can lead to congestive heart failure, in which the heart can no-longer pump enough blood out to supply the body's needs for oxygen.

More about the heart and blood circulation:
See the following for more about the heart, blood, blood circulation, disorders of the blood circulation system, and related topics.

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