Which of the choices below is the least important role of tubular secretion?
A) disposing of substances not already in the filtrate, such as certain drugs
B) eliminating undesirable substances such as urea and uric acid that have been reabsorbed by passive processes
C) ridding the body of bicarbonate ions
D) ridding the body of excessive potassium ions

Question

Quizplus · Accepted Answer

The role of ridding the body of bicarbonate ions is important, but it is not the least important role of tubular secretion. A, B, and D are all more important because they involve eliminating substances that can be harmful or toxic to the body if they are allowed to accumulate.

Which of the Choices Below Is the Least Important Role