Afferent arteriole is narrower than efferent arteriole
Efferent arteriole is narrower than afferent arteriole
Different venule is narrower than afferent venule
Afferent venule is narrower than efferent venule
A
Different venule is narrower than afferent venule
B
Afferent arteriole is narrower than efferent arteriole
C
Afferent venule is narrower than efferent venule
D
Efferent arteriole is narrower than afferent arteriole
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Solution
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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 out-going arterioles. This increased blood pressure helps to force the components of the blood out of the glomerular capillaries.
So, the correct answer is option C.
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