The inner medulla of the kidney is _____Blank to the loop of Henle and therefore, water leaves the loop at the descending limb and collecting duct.Multiple Choiceisotonichypertonichypotonicbalanced
Question
The inner medulla of the kidney is _____Blank to the loop of Henle and therefore, water leaves the loop at the descending limb and collecting duct.Multiple Choiceisotonichypertonichypotonicbalanced
Solution
The correct answer is "hypertonic".
Here's why:
The loop of Henle plays a crucial role in the concentration of urine in the kidneys. The descending limb of the loop of Henle is permeable to water but not to salt, and thus water passively diffuses out into the hypertonic medulla. The inner medulla of the kidney is hypertonic to the loop of Henle, which means it has a higher concentration of solute. Therefore, water leaves the loop at the descending limb and collecting duct, moving from an area of lower solute concentration (inside the loop of Henle) to an area of higher solute concentration (the inner medulla). This process helps in the concentration of urine.
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