OVERVIEW OF THE IMMUNE SYSTEM
LYMPHATIC TISSUES AND ORGANS
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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: -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: -A common type of valve is a check or backflow preventer. These valves are unidirectional valves and allow the water to flow in one direction only.
There is 1 question to complete.