MEDICAL
KIDNEY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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to decrease the water potential in the medulla
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to increase the water potential in the medulla
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to decrease the water potential in the cortex
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to increase the water potential in the cortex
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Detailed explanation-1: -Its main function is to reabsorb water and sodium chloride from the filtrate. This conserves water for the organism, producing highly concentrated urine.
Detailed explanation-2: -The loop of henle is a region of the kidney’s nephrons which through active and passive transport of Na+ and Cl-ions lowers the water potential of the kidney’s medulla, allowing greater reabsorbtion of water into the blood at both the loop of henle and collecting duct.
Detailed explanation-3: -The primary function of the loops of Henle and the thick ascending limb of the distal tubule is the concentration of urine utilizing a principle called ‘countercurrent multiplication. ‘ The medulla possesses a gradient of urea and salt with increasing concentrations of these solutes closer to the papillae.
Detailed explanation-4: –The longer the loop of Henle, the lower the water potential of urine.-Ions pass out from the ascending limb into the medulla, creating a lower water potential in the medulla.-Water is reabsorbed from the collecting duct in the medulla by osmosis.