Desiree is having difficulty sleeping. She has heard of a natural substance that might help her sleep, as it naturally occurs in the brain and apparently mediates the circadian rhythm and sleep. You are sure that she is referring to __________.

Question

Quizplus · Accepted Answer

Melatonin is a natural substance that is produced in the brain and has been shown to help regulate the sleep-wake cycle. It is commonly used as a supplement to aid in sleep and can be purchased over-the-counter. Serotonin, endorphins, and norepinephrine are other neurotransmitters that are involved in various functions in the brain, but they are not specifically known for their role in sleep regulation.

Desiree Is Having Difficulty Sleeping