VASCULAR
THE NEPHRON
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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PCT
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DCT
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Ascending Loop
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Descending Loop
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Detailed explanation-1: -Reabsorption takes place in the ‘kidney tubule or nephron’. Different parts of the kidney tubule such as proximal & distal convoluted tubules, Henle’s loop, and collecting duct play a major role in reabsorption. Most of the reabsorption takes place in proximal convoluted tubules (PCT).
Detailed explanation-2: -The proximal convoluted tubules (PCT) are the major site of reabsorption of many electrolytes such as sodium, potassium, chloride, and calcium, but only 10%–25% of magnesium is reabsorbed in this segment (Le Grimellec et al., 1973).
Detailed explanation-3: -Maximum reabsorption of useful substances from glomerular filtrate occurs in proximal convoluted tubule (PCT). PCT is lined by a simple cuboidal brush border epithelium which increases the surface area for reabsorption.
Detailed explanation-4: -PCT: PCT reabsorbs 66% of water, glucose, amino acids, and electrolytes such as sodium, chloride, potassium, and calcium. DCT: DCT reabsorbs water and electrolytes such as sodium, calcium, and chloride.