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Counter current mechanism is useful for...

Counter current mechanism is useful for

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Maintaining concentration gradient in medullary interstitium
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The counter current mechanism involves the transport of …….....to maintain the concentration of……...in medullary interstitium.

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.

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

Counter current mechanism observed in the renal medulla helps in formation of concentrated urine dilute urine reabsorption of nutrients reabsorption of creatinine

Assertion :- Mammals have the ability to produce a concentrated urine. Reason :- Counter current mechanism occurs in vasa recta and Henle's loop.

Assertion: In terrestrial animals,counter current mechanism helps in the concentration of the filtrate to pass out concentrated urine. Reason: Descending limb is impermeable to water while ascending limb is impermeable to Na^(+)

Counter current machanism helps in concentrating urine in animals and mainly operaters on {:(a.,"Henle's loop",b.,"Vasa-react"),(c.,"PCT",d.,"DCT"):}

Read the statements given below A. The renal cortex extends between the medullary pyramids as Columns of Bertini. B. ATP molecules are used in kidneys to convert NH3 to urea. C. Reabsorption of water in PCT and loop of Henle is obligatory. D. High medullary osmolarity is mainly developed due to NaCI and urea by counter current mechanism of vasa recta and loop of Henle. The correct statements are

counter current mechanism between loop of Henle and Vasa recta result in reabsorption of water from

Match column I with column II and select the correct option from the codes given below. {:("Column I","Column II"),(A." PCT",(i)." Minimum reabsorption"),(B." DCT",(ii)." Filtration of blood"),(C." Loop of Henle",(iii)." Reabsorption of 70-80% electrolytes"),(D." Counter current mechanism",(iv)." Ionic balance"),(E." Renal corpuscle",(v)." Maintenance of concentration gradient in medulla"):}

ALLEN-EXCRETORY PRODUCTS AND THEIR ELIMINATION-S
  1. Counter current mechanism is useful for

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  2. Find out correct statements - <bt>(A)Mammals, amphibia, freshwater fis...

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  3. Assertion :- In fish ammonia is excreted by diffusion through gill sur...

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  4. Waste product of mammal is -

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  5. Which waste product is generally excreted by diffusion across body sur...

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  6. Find out the correct statement -

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  7. High osmolarity of inner medullary interstitium is mainly caused by -

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  8. Which one of the following is metabolic waste of protein metabolism

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  9. If liver from body is removed then which component of blood would incr...

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  10. Find the correct answer about glomerular filtrate 1. Formed continuo...

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  11. Glomerular filtrate contains

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  12. which one is both osmoregulator as well as nitrogenous products

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  13. Select the true statement -

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  14. Which of the following statement is not true about nephrons ?

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  15. Which statement is wrong ?

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  16. Micturition is

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  17. The urine is :-

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  18. In ornithine cycle, which of the following wastes are removed from the...

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  19. A person is undergoing prolonged fasting. His urine will be found to c...

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  20. Which of the following group of animals are ammonotelic in nature ?

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  21. Which is neither reabsorbed nor secreted by the tubular cells of nephr...

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