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The increase in osmolarity from outer to...

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

A

(iii) and (iv)

B

(i) , (ii) and (iii)

C

(i) and (ii)

D

Only (ii)

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The correct Answer is:
C
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The high osmolarity of the renal medulla is maintained by all of the following except (i) Active transport of salt from the upper region of the ascending limb (ii) The spatial arrangement of juxta medullary nephrons (iii) Diffusion of urea from the collecting duct (iv)Diffusion of salt from the ascending limb of the loop of Henle (v) Diffusion of salt from the descending limb of the loop of Henle

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

Pick the odd ones in each of the following groups and select the correct option (i). Renal pelvis, Medullary pyramid, Renal cortex, Renal papilla (ii). Afferent arteriole, Henle's loop, Vasa recta, Efferent arteriole (iii). Glorerular filtration, antidiuretic hormone, Hypertonic urine, collecting duct (iv). Proximal convoluted tubule, distal convoluted tubule, Henle's loop, Renal corpuscle

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PHYSICS WALLAH-EXCRETORY PRODUCTS AND THEIR ELIMINATION -NEET Past 10 Years Questions
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  8. Which of the following statements is correct ?

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  9. Glucose is completely reabsorbed B . Urea is partially reabsorbed ...

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  10. Which of the following statements is not true ?

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  11. The part of nephron involved in active reabsorption of sodium is

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  12. In mammals , which blood vessel would normally carry largest amount of...

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  13. Removal of proximal convolured tuble from the nephron will result in ...

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  14. Which of th following does not favour the large quantities of dilute ...

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  15. Human urine is usually acidic because :

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  17. Figure shows human urinary system with structures labelled A to D. Sel...

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  18. A fall in glomerular filtration rate (GFR) activates

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