aortic valve (medicine) and costal pleurisy (medicine)

aortic valve (medicine)

aortic valve

The heart valve that divides the left ventricle and the aorta. The aortic valve opens during left ventricular contraction and then closes to prohibit the backwash of oxygenated blood from the aorta into the ventricle. The aortic valve has 3 valve cusps.

costal pleurisy (medicine)

costal pleurisy
Inflammation of the pleura lining the thoracic walls.

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