What Is the Function of Urea Reabsorption in the Collecting

question 47

Multiple Choice

What is the function of urea reabsorption in the collecting ducts of the kidney?

• A) It restores the correct concentration of blood urea.
• B) It increases the osmotic concentration of the interstitial fluid in the renal medulla so that more water can be extracted from the urine.
• C) It reduces the salinity of the renal medulla and thus helps regulate how much water is reabsorbed from the urine.
• D) It moves the urea into the ascending limb of the loop of Henle so that it can be excreted from there in the urine.

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Definitions:

Optic Nerve

A cranial nerve that transmits visual information from the retina to the brain.

Optic Chiasm

The optic chiasm is the part of the brain where the two optic nerves cross each other, crucial for visual coordination.

Lateral Geniculate

A key station in the brain's visual pathway, part of the thalamus, that processes signals from the retina on the way to the visual cortex.

Dorsal Pathway

A neurologic route in the brain responsible for spatial awareness and the processing of object locations in relation to the body.