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We can produce concentrated? Dilute urin...

We can produce concentrated? Dilute urine. This is facilitated by a special mechanism. Identify the mechanism.

A

Reabsorption from PCT

B

Reabsorption from collecting duct

C

Reabsorption/Sccretion in DCT

D

Counter-current mechanism in Henle's loop/vasa recta

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The correct Answer is:
D
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Assertion :- Human kidneys can produce urine nearly four times concentrated than the initial filtrate formed. Reason :- Counter current mechanism helps to maintain a concentration gradient in the medullary interstitium.

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ARIHANT NEET-EXCRETORY PRODUCTS AND THEIR ELIMINATION-Chapter Exercises(Taking it together)
  1. Reabsorption of K^(+) ions in the tubules of nephrons occurs by the pr...

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  2. The major reabsorption of Na^(+) takes place in which part of kidney

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  3. We can produce concentrated? Dilute urine. This is facilitated by a sp...

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  4. The urine excreted by mammals is

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  5. Which blood vessel takes blood away from kidney ?

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  6. The macula densa is a part of the

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  7. Renin is released by

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  8. Which one of the following is also known as antidiuretic hormone?

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  9. Absorption of water in DCT is controlled by

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  10. Aldostercne hormone is produced by

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  11. The kidneys control the amount of water with the help of hormone

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  12. The kidneys control the amount of Na with the help of hormone

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  13. In micturition

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  14. If we remove the pressure receptors from the urinary bladder wall then

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  15. Excretion is a continuous process but urine is not passed out continuo...

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  16. Concentration of inorganic salts in normal urine of a human beings is

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  17. The pH of human urine is approximately

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  18. Human urine is invariably acidic because

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  19. Why do we pass more urine during winter and wet seasons ?

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  20. Kidneys are not the only organs of excretion their work is supplemente...

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