A student asks the physiology instructor how the kidneys control body fluid composition. The instructor explains that the kidneys, by actively removing solutes from the capillary system for excretion in the urine, perform a process called what?
A) Glomerular filtration
B) Tubular reabsorption
C) Tubular secretion
D) Tubular metabolism
C
Feedback:
Tubular secretion is the movement of solutes from the capillary bed into the renal tubule. Glomerular filtration is the passing of fluid from the capillary system into the renal tubule in Bowman's capsule. Tubular reabsorption is the movement of solutes from the tubule into the capillary system.
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