Release of melatonin is suppressed by
A) exposure of the animal to light.
B) exposure of the animal to darkness.
C) input from peripheral clocks.
D) input from the superior colliculi.

Question

Quizplus · Accepted Answer

Melatonin is a hormone that is released in response to darkness and suppressed by exposure to light. Therefore, option A is the correct answer, as it states that melatonin release is suppressed by exposure to light. Options B, C, and D are incorrect, as they do not accurately describe the regulation of melatonin release.

Release of Melatonin Is Suppressed by