How can the same nephron in an amphibian produce dilute urine or urine as concentrated as blood plasma?
A) Different amounts of NaCl are reabsorbed.
B) Different amounts of NaCl are secreted.
C) The distal convoluted tubule can change its permeability to water based on the amount of circulating ADH.
D) The proximal convoluted tubule can change its permeability to water based on the amount of circulating NaCl.
Correct Answer:
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