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What does the countercurrent mechanism accomplish in the nephron loop? a) constriction of the arterioles to increase blood pressure b) production of very dilute urine c) secretion of water and electrolytes into the filtrate d) creation of a steep concentration gradient for continued water reabsorption.

Respuesta :

Answer:

Creation of a steep concentration gradient for continued water reabsorption.

Explanation:

Countercurrent mechanism may be defined as the mechanism in which the concentration gradient is created by the energy expenditure. The urine is concentrated in the nephron by this mechanism.

This countercurrent mechanism helps in the the creation of the gradient. This concentration gradient is necessary for the reabsorption of water and solutes. The solutes gets exchanged between the nephron and blood plasma by creating the different concentration gradient.

Thus, the correct answer is option (d).

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