HISTOLOGY
URINARY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The protein channels that allow water molecules to cross cell membranes, their positioning is important for regulating water reabsorption in the kidneys’ collecting ducts.
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ligand channels
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aquaporins
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leaky channels
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sodium channels
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Explanation:
Detailed explanation-1: -Aquaporin is water channel protein that transports water molecules across the biomembrane (109, 110). In particular, AQP2 is the critical water channel protein for vasopressin-mediated water reabsorption, which is localized in the kidney connecting tubules and collecting ducts (29, 121).
Detailed explanation-2: -The plasma membranes of many cells also contain water channel proteins (aquaporins), through which water molecules are able to cross the membrane much more rapidly than they can diffuse through the phospholipid bilayer.
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