The counter current mechanism in Henle?s loop and Vasa recta is operated
mainly to _______________.
a) Eliminate urea
b) Eliminate Salt
c) Produce concentrated urine
d) Produce large quantity of dilute urine

Dear student,
correct answer is option (c)
The counter current mechanism in the loop of henle and Vasa Recta is operated mainly to produce the concentrated urine. Counter current mechanism is used to form concentrated urine in the kidneys by the nephrons of our excretory system. It helps in the maintainence of the concentration gradient, which in turn helps in the easy movement of the water from collecting tubules of nephrons. The gradient is the result of movement of the NaCl and urea. Regards.

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