ECOLOGY
EXCRETORY PRODUCTS AND THEIR ELIMINATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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glomerulus
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Bowman’s capsule
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First coiled tubule
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Loop of Henle
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Detailed explanation-1: -Water present in the filtrate in the papillary duct flows through aquaporin channels out of the duct, moving passively down its concentration gradient. This process reabsorbs water and creates a concentrated urine for excretion.
Detailed explanation-2: -Reabsorption of Na+ in the thick ascending limb of Henle’s loop (TAL) occurs through (1) transcellular pathways involving the Na+-2Cl−-K+ cotransporter in the apical membrane and (2) paracellular pathways driven by the lumen positive transepithelial potential difference.
Detailed explanation-3: -This part of the nephron is called the loop of Henle. 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-4: -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.