Which of these statements does NOT describe urea
A)It is the waste product with the smallest molecular size in the glomerular filtrate.
B)It is in greater concentration at the end of the proximal tubule than in other body fluids.
C)It has a clearance rate greater than GFR.

Question

Quizplus · Accepted Answer

Urea does not have a clearance rate greater than the glomerular filtration rate (GFR). Clearance rate greater than GFR indicates active secretion into the filtrate, which is not the case for urea. Urea is passively reabsorbed, and its clearance is less than GFR.

Which of These Statements Does NOT Describe Urea