What is needed to control secretion of melatonin from the pineal gland?
A)sympathetic stimulation from the suprachiasmatic nucleus of the hypothalamus
B)activation of melanopsin from ganglion cells of the retina
C)sunlight or lack of sunlight
D)All apply.

Question

Quizplus · Accepted Answer

All of the options listed are necessary to control secretion of melatonin from the pineal gland. The suprachiasmatic nucleus of the hypothalamus stimulates the pineal gland to produce melatonin rhythmically, the melanopsin from ganglion cells of the retina helps to entrain the circadian clock to the light-dark cycle, and sunlight or lack of sunlight influences the timing of melatonin secretion.

What Is Needed to Control Secretion of Melatonin from the Pineal