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Choose the incorrect statement

Option: 1

Ascending limb plays a significant role in the maintenance of high osmolarity of medullary interstitial fluid.


Option: 2

The descending limb of the loop of Henle is permeable to water but impermeable to electrolytes.


Option: 3

The ascending limb is impermeable to water but allows transport of electrolytes actively or passively.


Option: 4

PCT  is lined by stratified epithelium which increases the surface area for reabsorption.


Answers (1)

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Revision Concept: Functions of Renal Tubules -

Proximal Convoluted Tubule (PCT): 

  • PCT is lined by simple cuboidal brush border epithelium which increases the surface area for reabsorption.
  • Nearly all of the essential nutrients and 70-80 percent of electrolytes and water are reabsorbed by this segment. 
  • PCT also helps to maintain the pH and ionic balance of the body fluids by selective secretion of hydrogen ions, ammonia and potassium ions into the filtrate and by absorption of HCO3– from it.

 

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PCT  is lined by simple cuboidal brush border epithelium which increases the surface area for reabsorption. Hence, the correct option is PCT is lined by stratified epithelium which increases the surface area for reabsorption.

Posted by

Ritika Harsh

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