The overall purpose of the countercurrent exchange system is
A)to supply salt and urea to the renal medulla.
B)to supply nutrients and oxygen to the renal cortex.
C)to supply nutrients and oxygen to the renal medulla.
D)to remove metabolic wastes from the renal cortex.
E)to remove metabolic wastes from the renal medulla.

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The Answer of The overall purpose of the countercurrent exchange system is
A)to supply salt and urea to the renal medulla.
B)to supply nutrients and oxygen to the renal cortex.
C)to supply nutrients and oxygen to the renal medulla.
D)to remove metabolic wastes from the renal cortex.
E)to remove metabolic wastes from the renal medulla.

The Overall Purpose of the Countercurrent Exchange System Is