Loop Ion
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How is the high solute concentration of the inner renal medulla maintained?
a. part of the collecting duct is permeable to urea allowing for its release into the medulla
b. ions released in the loop of the nephron keep solute concentrations high
c. ions released in the collecting duct keep solute concentration high
d. urea released in the loop of the nephron keep solute concentration high
e. part of collecting duct is permeable to sodium allowing for its release into the medulla
I believe it is b.
By the process of elimination.
a. The whole point is to get rid of urea. Urea is actually secreted in the kidney.
b. yes, this is where the magic happens.
c. no, just water here.
d. again, urea is secreted in the kidney, this is kind of a fundamental principle.
e. NaCl is released but not sodium.
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