Melatonin inhibits the brain's mechanisms for promoting wakefulness-allowing various other sleep-related mechanisms to do their work "unopposed" by a drive for wakefulness.

Question

Quizplus · Accepted Answer

Melatonin, produced by the pineal gland in response to darkness, signals the brain to reduce its alertness and prepare for sleep, thus inhibiting the brain's wakefulness mechanisms and allowing sleep-promoting processes to operate more effectively.

Melatonin Inhibits the Brain's Mechanisms for Promoting Wakefulness-Allowing Various Other