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(D) The human kidneys filter approximately $180\,L$ of fluid per day,which is known as the Glomerular Filtration Rate $(GFR)$.This high rate of filtra

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The efferent arteriole is wider than the afferent arteriole causing easier outflow of blood from glomerulus.

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(D) The human kidneys filter approximately $180\,L$ of fluid per day,which is known as the Glomerular Filtration Rate $(GFR)$.This high rate of filtration is facilitated by several structural and physiological features of the renal corpuscle:$1$. The glomerular capillaries possess a very large surface area for filtration.$2$. These capillaries are fenestrated (contain pores),making them significantly more permeable (leakier) than typical systemic capillaries.$3$. The blood pressure in the glomerular capillaries is higher than in other capillaries because the diameter of the afferent arteriole is wider than that of the efferent arteriole.Option $D$ states that the efferent arteriole is wider than the afferent arteriole,which is incorrect. In reality,the afferent arteriole is wider,which creates a high-pressure environment within the glomerulus to force fluid out. Therefore,option $D$ does not justify the high filtration rate.

$A$ large amount of about $180\,L$ of fluid is filtered by the human kidneys per day. Which one of the following renal corpuscle features does not justify this?

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