Orexin is a neuropeptide secreted from lateral hypothalamus and pre-frontal cortex concerned in the wakefulness and excitement. This study aimed to review the possible neurobiological effect of orexin. A diversity of search strategies was adopted and assumed which included electronic database searches of Medline and PubMed using MeSH terms. keywords. https://megkiqjo6gdjo3.theisblog.com/35130347/directional-fracture-mechanism-and-surrounding-rock-damage-characteristics-of-slotted-cartridge-blasting