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Mark theINCORRECT statement

  • a)
    Counter-current flow of blood in vasa recta helps to retain the reabsorbed sodium in the renal medulla

  • b)
    Glomerular filtrate is protein free plasma

  • c)
    Vasa carry glomerula filtrate from distal convoluted tubule to the collecting duct

  • d)
    Glomerular filterate in Bowman’s capsule is isotonic to the plasma

Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Mark theINCORRECT statementa)Counter-current flow of blood in vasa rec...
  • The Henle’s loop and vasa recta play a significant role in this. The flow of filtrate in the two limbs of Henle’s loop is in opposite directions and thus forms a counter current. The flow of blood through the two limbs of vasa recta is also in a countercurrent pattern. The proximity between the Henle’s loop and vasa recta, as well as the countercurrent in them, help in maintaining an increasing osmolarity towards the inner medullary interstitium, i.e., from 300 mOsmolL–1 in the cortex to about 1200 mOsmolL–1 in the inner medulla. This gradient is mainly caused by NaCl and urea. NaCl is transported by the ascending limb of Henle’s loop which is exchanged with the descending limb of vasa recta. NaCl is returned to the interstitium by the ascending portion of vasa recta. 
  • The glomerular filtrate resembles the protein free plasma in composition and osmotic pressure.
  • The glomerular filtrate contains all the materials present in the blood except blood cells and most proteins, which are too large to cross the basement membrane of the glomerulus.
  • Hence, the filtrate is isotonic to blood plasma in the proximal convoluted tubule.
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Mark theINCORRECT statementa)Counter-current flow of blood in vasa rec...
Vasa recta carry glomerulus filtrate from loop of henle not from DCT so it is incorrect and remaining all statement of ncert
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Mark theINCORRECT statementa)Counter-current flow of blood in vasa recta helpsto retain the reabsorbed sodium in the renal medullab)Glomerular filtrate is protein free plasmac)Vasa carry glomerula filtrate from distal convolutedtubule to the collecting ductd)Glomerular filterate in Bowman’s capsule isisotonic to the plasmaCorrect answer is option 'C'. Can you explain this answer?
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