Tubular secretion
A)refers to the movement of a substance from the peritubular capillary blood into the tubular lumen
B)can occur by active or passive transport mechanisms
C)of K+ occurs in the distal and collecting tubules and is stimulated by aldosterone
D)of organic ions occurs in the proximal tubule by two distinct types of carriers
E)has all of the above characteristics

Question

Quizplus · Accepted Answer

Tubular secretion can involve the movement of a substance from the peritubular capillary blood into the tubular lumen (A), and can occur by active or passive transport mechanisms (B). K+ secretion occurs in the distal and collecting tubules and is stimulated by aldosterone (C), while organic ion secretion occurs in the proximal tubule by two distinct types of carriers (D). Therefore, all of the above choices are correct.

Tubular Secretion