ANATOMY
CHEST AND CARDIOVASCULAR
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A vein has ____ This helps keep blood going in the right direction.
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valves
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very thin walls
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very thick wall
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None of the above
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Explanation:
Detailed explanation-1: -Heart valves control the flow of blood so that it moves in the right direction. The valves prevent blood from flowing backward.
Detailed explanation-2: -In healthy leg veins, one-way valves allow blood to move only in one direction: towards the heart. To do this, when you walk, your leg muscles squeeze the deep veins of your legs and feet, pushing the non-oxygenated blood back to the heart.
Detailed explanation-3: -Heart valves open and close to allow for proper blood flow. Your valves ensure that blood flows only in one direction. These valves are: Aortic valve connects your left ventricle and aorta (large artery that carries blood throughout your body).
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