MEDICAL
HEART AND PERICARDIUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the role of valves in the veins?
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Slow down the heartbeat
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Filter the blood
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To prevent backflow
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Create a pulse
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Explanation:
Detailed explanation-1: -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. Normal valves have 3 flaps (leaflets), except the mitral valve. It only has 2 flaps.
Detailed explanation-2: -Thus, valves help the return of blood to the heart-by opening when the blood flows toward the heart and closing when blood might flow backward. The deep veins play a significant role in pushing blood toward the heart. The one-way valves in deep veins prevent blood from flowing backward.
Detailed explanation-3: -Final answer:The valve which prevents back flow of blood in the veins is Semilunar valve.
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