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Definition of Valves, heart

Valves, heart: There are four heart valves. All are one-way valves. Blood entering the heart first passes through the tricuspid valve and then the pulmonary valve. After returning from the lungs, the blood passes through the mitral (bicuspid) valve and exits via the aortic valve.

QUESTION

In the U.S., 1 in every 4 deaths is caused by heart disease. See Answer
Reviewed on 12/27/2018
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