Question

The secretion of potassium

Select one:

a. Occurs mostly within in the loop of Henle

b. Is inhibited by aldosterone from adrenal cortex

c. Takes place primarily at the glomerulus.

d. Is an energy requiring process

Answer 1

Answer is option (d)  Is an energy requiring process

K+ ions are secreted into the tubular lumen of nephrones through K+ ion channels. This secretion is an energy requiring process.
Potassium ions are primarily secreted in the distal convoluted tubules and collecting duct. So option (a) is incorrect

Aldosterone stimulates the secretion of potassium in DCT and collecting duct. So option (b) is wrong

Potassium is freely filtered by glomerulus. It's not secreted. So option (c) is also incorrect.