PATHOLOGY MCQ
BLOOD VESSELS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which statement regarding Veins is correct?
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Carry blood from the heart towards the body tissues
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Always carry deoxygenated blood
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Contain valves which prevent black flow
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Have thick, muscular walls
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Explanation:
Detailed explanation-1: -These valves only permit the flow of blood in one direction, ensuring blood continues to circulate correctly. If we take a look at the options provided in the question, we can see that the correct answer is option (D): to prevent the backflow of blood.
Detailed explanation-2: -Aortic valve: Allows blood to pass from the left ventricle to the aorta; prevents backflow of blood into the left ventricle.
Detailed explanation-3: -The blood passing through the veins is deoxygenated (except in pulmonary veins) and flows at a low pressure. It flows slow and steady against the direction of gravity. Therefore, veins have valves to prevent the backflow of blood.
There is 1 question to complete.