Which part of the nephron is normally most permeable to water in domestic mammals?
Correct answer: C. Proximal convoluted tubule
- A. Distal convoluted tubule
- B. Thick ascending limb
- C. Proximal convoluted tubule
- D. Cortical collecting duct
Explanation
The proximal convoluted tubule reabsorbs large amounts of water along with solutes, so it has high baseline water permeability. The thick ascending limb is effectively impermeable to water and helps create the medullary osmotic gradient.
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Covers the gross and microscopic structure of domestic animals, including bones, joints, muscles, organs, blood vessels and nerves. It explains how the respiratory, cardiovascular, digestive, urinary, nervous, endocrine and reproductive systems function, with attention to species differences and the relationship between anatomical structure and physiological processes.
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