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  • The increase in osmolarity from outer to inner medullary interstitium is maintained due to -: (i)    Close proximity between Henle's loop and vasa recta

The increase in osmolarity from outer to inner medullary interstitium is maintained due to -:

(i)    Close proximity between Henle's loop and vasa recta

(ii)    Counter current mechanism

(iii)    Selective secretion of HCO_{3}^{-} and hydrogen ions in PCT

(iv)    Higher blood pressure in glomerular capillaries

 

 

 

 

Option: 1

(iii) and (iv)


Option: 2

(i) (ii) and (iii)


Option: 3

(i) and (ii)

 


Option: 4

only (ii)


Answers (1)

best_answer
  • Both (i) and (ii) are correct 
  • Counter current mechanism is important to maintain concentration gradient 
  • This mechanism is because of Henle's loop and Vasa recta 
  • The ascending limp of Loop of henle is parallel to descending vasa recta and vice versa 
  • Selective reabsorption is by PCT 
  • High blood pressure in glomerular capillaries caused glomerular filtration and not Counter current 
Posted by

Sayak

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