PATHOLOGY MCQ
URINARY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which statement is true?
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The efferent arteriole is wider than the afferent arteriole
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The afferent artery is wider than the efferent artery
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The afferent arteriole is wider than the efferent arteriole
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The afferent and efferent arterioles are the same width
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Explanation:
Detailed explanation-1: -The afferent arteriole larger in diameter than the efferent arteriole; This is to provide for the increased blood pressure in the glomerulus for ultrafiltration to take place.
Detailed explanation-2: -The Efferent Arteriole aids in the return of oxygenated blood from the heart to the lungs, while the Afferent Arterioles aid in delivering deoxygenated blood from the lungs back into circulation.
Detailed explanation-3: -The diameter of the afferent (incoming) arteriole is greater than the diameter of the efferent arteriole (by which blood leaves the glomerulus). The pressure of the blood inside the glomerulus is increased due to the difference in diameter of the incoming and outgoing arterioles.
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