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The overall purpose of the countercurrent exchange system is to __________.
a. supply nutrients and oxygen to the renal medulla
b. supply salt and urea to the renal medulla
c. remove metabolic wastes from the renal cortex
d. supply nutrients and oxygen to the renal cortex
e. remove metabolic wastes from the renal medulla

Respuesta :

Answer: a. supply nutrients and oxygen to the renal medulla.

Explanation:

Countercurrent exchange is a process that takes place in kidney creates a kind of concentration gradient so as to concentrate the urine by adding up urea and salt in the urine via renal medulla part of kidney.

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