HISTOLOGY
URINARY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The juxtaglomerular apparatus ____
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Helps reabsorb water from the collecting ducts
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Adjusts blood flow into the vasa recta
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Produces a concentrated urine
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Monitors blood sodium concentration and adjusts glomerular filtration volume
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Explanation:
Detailed explanation-1: -Macula densa cells in the distal nephron, according to the classic paradigm, are salt sensors that generate paracrine chemical signals in the juxtaglomerular apparatus to control vital kidney functions, including renal blood flow, glomerular filtration, and renin release.
Detailed explanation-2: -These cells have a contractile property similar to vascular smooth muscles and thus play a role in “regulating GFR” by altering the vessel diameter. Renin is also found in these cells.
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