GENERAL ANATOMY
URINARY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Renal medulla
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Loop of Henle
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Ascending tubule
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Renal Pelvis
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Detailed explanation-1: -Urea recycling is a process in kidneys that involves the reabsorption and secretion of urea several times, which contributes to the high concentration of solutes in the renal medulla and helps to establish and maintain the corticopapillary gradient.
Detailed explanation-2: -Urea recycling Antidiuretic hormone increases water permeability, but not urea permeability in the cortical and outer medullary collecting ducts, causing urea to concentrate in the tubular fluid in this segment.
Detailed explanation-3: -This increased concentration of urea in the inner medullary interstitium draws water from descending thin limbs (DTLs) and inner medullary collecting ducts (IMCDs), thereby reducing inner medullary interstitial concentration of NaCl ([NaCl]↓).