Tubular reabsorption
A) refers to the movement of a substance from the peritubular capillary blood into the tubular fluid
B) occurs by either active or passive transport
C) involves the process of transepithelial transport
D) occurs by either active or passive transport and involves the process of transepithelial transport
E) none of these

Question

Quizplus · Accepted Answer

Tubular reabsorption involves the movement of substances from the tubular fluid to the peritubular capillary blood. This occurs by either active or passive transport and involves the process of transepithelial transport, where substances move through the epithelial cells that line the renal tubules. Therefore, choice D is the best option. Choice A is incorrect because it describes tubular secretion. Choice B and C are partially correct, but do not fully describe the process of tubular reabsorption.

Tubular Reabsorption