Orexin, produced by neurons in the hypothalamus, appears to be necessary for ____.
A) getting to sleep
B) waking up
C) raising body temperature
D) staying awake

Question

Quizplus · Accepted Answer

Orexin, also known as hypocretin, is a neuropeptide that is produced by neurons in the hypothalamus and plays a key role in promoting wakefulness and arousal. In particular, orexin is necessary for staying awake and alert during the day. When orexin is depleted, such as in the case of narcolepsy or other sleep disorders, individuals may experience excessive daytime sleepiness and disruptions in their sleep-wake cycle.

Orexin, Produced by Neurons in the Hypothalamus, Appears to Be