Hypocretin, also known as orexin, is a neuropeptide produced in the hypothalamus. It plays a crucial role in regulating wakefulness, arousal, and appetite. The two types of hypocretin, hypocretin-1 (orexin-A) and hypocretin-2 (orexin-B), bind to their respective receptors to exert their effects on the nervous system.
