ANIMAL PHYSIOLOGY
OSMOREGULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which solution would involve active transport:
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Movement of oxygen from the lungs into oxygen poor blood.
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Movement of water from the descending loop of henle of the kidneys into the medulla of the kidney through aquaporins.
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Recycling of ions from the filtrate to maintain an osmotic gradient in the medulla of the kidney.
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Delivering CO2 from respiring cells into the blood in surrounding capillary beds.
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Explanation:
Detailed explanation-1: -The processes of countercurrent multiplication and countercurrent exchange for generating and maintaining the medullary osmotic gradient, respectively, are emphasized in most texts on renal physiology.
Detailed explanation-2: -ADH is needed to allow water from collecting ducts to enter interstitial space. Horizon 3: urea recirculates in the inner medulla, building a stronger osmotic gradient.
Detailed explanation-3: -The countercurrent exchange of water and solutes between the ascending vasa recta (AVR) and descending vasa recta (DVR) and the interstitium preserves the osmotic gradient by preventing the rapid transfer of solutes away from the medulla (Pallone et al.
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