A) filtration of blood
B) maintenance of glomerular filtration rate
C) selective reabsorption of glucose, amino acid NaCI and water
D) reabsorption of salts only
Correct Answer: C
Solution :
Just below the glomerulus, the tubule has a very short neck. Attach to each Bowmans capsule, a thin, long tubule is present. This tubule is differentiated into three distinct regions such as Proximal Convoluted Tubule (PCT), Henles loop and distal convoluted tubule. These finally terminates into the collecting duct. Out of these three regions, the cells of PCT have numerous microvilli which increases the surface area available for reabsorption. Mostly 65% of reabsorption takes place within the PCT only. It acts as a major site for the selective reabsorption of glucose, amino acids, water and different ions (such as hydrogen ions, bicarbonate ions, potassium ions, etc.).
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