ANIMAL PHYSIOLOGY
HUMAN CIRCULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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These have valves that prevent backflow of blood
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arteries
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veins
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arterioles
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capillaries
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Explanation:
Detailed explanation-1: -Aortic valve: Allows blood to pass from the left ventricle to the aorta; prevents backflow of blood into the left ventricle.
Detailed explanation-2: -Final answer:The valve which prevents back flow of blood in the veins is Semilunar valve.
Detailed explanation-3: -Valves are found in veins to check the backflow of blood flowing under.
Detailed explanation-4: -If gravity or muscle contractions try to pull the blood backward or if blood begins to back up in a vein, the flaps are pushed closed, so the blood does not flow backward. 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.
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