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The counter current mechanism operates in nephron

a)

In ascending and descending limb of vasa recta

b)

In ascending limb of Henle’s loop

c)

In descending limb of Henle’s loop

d)

Between the loop of Henle and vasa recta


Question ID - 3709 :-

The counter current mechanism operates in nephron

a)

In ascending and descending limb of vasa recta

b)

In ascending limb of Henle’s loop

c)

In descending limb of Henle’s loop

d)

Between the loop of Henle and vasa recta

1 Answer
5876 Votes
3537

Answer Key : (d) -

(d)

The flow of blood through the two limps of vasa recta is in counter current pattern (opposite)

The proximity between the Henle’s loop and vasa recta as well as the counter current in them help in maintaining an increasing osmolarity toward the inner medullary interstitium. i.e., from 300  in cortex to about 1200  in the inner medulla. This is also called medullary gradient



Next Question :

The average quality of urea excreted in urine by man per day is

a)

1-5 g

b)

25-30 g

c)

1-1.5 L

d)

80 g


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