ANATOMY
CHEST AND CARDIOVASCULAR
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the function of a valve?
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Helps blood to clot
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Keeps blood flowing in all directions
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Keeps blood flowing in one direction
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Stops blood from flowing
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Explanation:
Detailed explanation-1: -Blood passes through a valve before leaving each chamber of the heart. The valves prevent the backward flow of blood. Valves are actually flaps (leaflets) that act as one-way inlets for blood coming into a ventricle and one-way outlets for blood leaving a ventricle.
Detailed explanation-2: -The artery have thick elastic walls and arteries receives blood in high pressure directly from the left ventricle. Because of the high pressure flow of blood from the heart and the elasticity of the vessels, they blood flows only in one direction in arteries.
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