ANIMAL PHYSIOLOGY
EXCRETION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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More water is reabsorbed
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Less water is reabsorbed
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More urea and salts are reabsorbed
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Less urea and salts are reabsorbed
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Detailed explanation-1: -After entering the duct cell from the collecting duct lumen through the AQP2 channels, the water exits the cell through the AQP3 and AQP4 channels located in the cell basolateral membrane, causing the water to enter the interstitial space of the nephron.
Detailed explanation-2: -Answer and Explanation: When ADH is secreted, it makes us urinate less water by making the collecting ducts more permeable to water reabsorption. As a result, our urine will be concentrated and will appear dark yellow.
Detailed explanation-3: -As more sodium is reabsorbed by the cell, even more water travels into the interstitium. At times of extreme dehydration, the collecting duct can absorb about 20% of the total amount of water found in the filtrate from the collecting duct.