Narrowing of the aortic valve in the heart.
The aortic valve controls blood flow from the left ventricle to the aorta and the rest of the body. It opens when the ventricle contracts and closes when the ventricle relaxes.
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Source: ADAM Encyclopedia
The aorta is the main artery carrying blood out of the heart. When blood leaves the heart, it flows through the aortic valve, into the aorta. In... Read more »
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Source: ADAM Encyclopedia
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Source: HealthCentral Encyclopedia
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Source: Harvard Decision Guide
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