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Counter current machanism helps in conce...

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

A

a only

B

b only

C

a and b

D

All of these

Text Solution

Verified by Experts

The correct Answer is:
C
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Read the following statements about the excretory system in humans: I. A fall in GFR can activate the JG cells to release renin. II. ADH can also affect the kidney function by its constrictory effects on blood vessels. III. The proximity between the Henle's loop and vasa recta, as well as the counter-current in them help in maintaining an increasing osmolarity towards the outer medullary interstitium. IV Our lungs remove large amounts of CO_(2) (108 litres/day). V. Renal calculi are the stone or insoluble mass of crystallised salts like oxalates within the kidney. How many of these are correct?

Go through the following statements. (i) Liver is the site of urine formation. (ii) Urethra is not the part of kidney. (iii) Vasa recta is well developed in cortical nephrons. (v) The highest concentration of urea is found in Hepatic vein. (vi) Least concentration of urea is present in renal vein. How many statements are correct? (a) 0 (b) 2 (c) 3 (d) 5

AAKASH INSTITUTE ENGLISH-EXCRETORY PRODUCTS AND THEIR ELIMINATION-EXERCISE
  1. Hyperosmolarity of interstitial fluid in renal medulla is maintained b...

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  2. How much amount of blood passes through the kidneys per minute in a he...

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  3. Chemically glomerular filtrate is similar to blood plasma, except

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  4. A fall in GFR can activate the JG cells to release "" which can stimul...

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  5. Substances like glucose, amino acid NA^(+) etc. in the filtrate are re...

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  6. Osmotic concentration of glomerular filtrate is the highest at the bot...

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  7. Which limb of loop of Henle is impermeable to wate but allow transport...

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  8. Counter current machanism helps in concentrating urine in animals and ...

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  9. Diuretic substances like tea, coffee, alcohol etc. increases urine out...

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  10. Define glomerular filtration rate (GFR).

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  11. Dialysis fluid contanis all the constituents as in plasma except

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  12. Reabsorption of water from distal parts of the tubules is facilitated ...

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  13. Mark the incorrect statement:

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  14. Which of the following organs, other than kidneys, also help in the el...

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  15. Find out the incorrectyly matching pair w.r.t. the accessory excretory...

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  16. Presence of glucose (glycosuria) and ketone bodies (ketonuria) in urin...

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  17. In case of dehydration, secretion of all harmones increases expect one...

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  18. Which of the following is a powerful vasoconstrctor that increases the...

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  19. Which part of brain sends voluntary motor signals to smooth muscles of...

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  20. Which of the following is not metabolised in human body and therefore,...

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