URINARY SYSTEM AND MALE FEMALE REPRODUCTIVE SYSTEMS
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: -The juxtaglomerular apparatus is an anatomical unit located at the hilus of the glomerulus and is believed to be involved in feedback control of renal blood flow and glomerular filtration rate.
Detailed explanation-2: -Cells in macula densa contain chemoreceptors that continuously monitor the sodium chloride (NaCl) concentration in the filtrate, so they are also known as salt sensors.
Detailed explanation-3: -The juxtaglomerular cells secrete renin in response to: Stimulation of the beta-1 adrenergic receptor. Decrease in renal perfusion pressure (detected directly by the juxtaglomerular cells) Decrease in NaCl concentration at the macula densa, often due to a decrease in glomerular filtration rate.
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