PHYSIOLOGY
CARDIOVASCULAR PHYSIOLOGY
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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: -Arteries are thick-walled when compared to thin-walled veins. Arteries for this reason carry oxygenated blood which comparatively has high pressure. Since the blood pressure In this region is high, the blood flows only In one direction.
Detailed explanation-3: -Check valve or Reflux valve: These valves are also known as non-return valves or reflux valves. They allow the water to flow in one direction only.
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