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The osmotic gradient between the cortex ...

The osmotic gradient between the cortex and medulla is created by

A

UreaÂ

B

`NH_(3)`Â

C

Sodium chloride

D

Both A and C

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The correct Answer is:
D
The proximity between the Henle's loop and vasa rectz, as well as the counter current 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
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A2Z-EXCRETORY PRODUCTS AND THEIR ELIMINATION-Section A : Topicwise Questions Topic 3 : Function Of The Tubules And Mechanism Of Concentration Of
  1.  Which factor helps in maintaining an increasing osmolality towards t...

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  2.  Recognise the figure and find Out the correct matching

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  3. The osmotic gradient between the cortex and medulla is created by

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  4. Fill in the blanks: a. Ascending limb of Henle’s loop ...(1)....

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  5. Counter-current mechanism helps to maintain a concentration gradient i...

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  6. Human kidneys can produce urine nearly concentrated than the initial f...

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  7. Reabsorption of useful substances from glomerular filtrate occurs in

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  8. Under normal conditions which one is completely reabsorbed in the rena...

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  9. Which of the following is totally reabsorbed in renal tubes ?

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  10. Reabsorption of water in PCT part of nephron is

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  11. Distal convoluted tubule is lined with

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  12. In nephron, water absorption is maximum in

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  13. What is permeable for ascending loop of Henle ?

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  14. Part of nephron involved in active reabsorption of sodium is

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  15. Main function of loop of Henle is

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  16. If Henle's loop were absent from mammalian nephron which of the follow...

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  17. Absorption of major part of Na^(+) and K^(+) ions occurs in

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  18. Loop of Henle is connected with

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  19.  Recognise the figure and find out the correct matching

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  20. Excretion of dilute urine is due to

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