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All Thll Is Hot

作　　者：万宇婧 

机构地区：[1]不详

出　　处：《疯狂英语（初中天地）》2021年第11期4-7,共4页Crazy English

摘　　要：我们之所以会感到疲劳是因为一种叫作腺昔的神经化学物质在体内积累并和腺昔受体结合,这会导致神经细胞变得不活跃,大脑血管扩张。简而言之,你的身体会接收到休息的信号。但由于咖啡因与腺昔相似,它会与这些受体结合,从而阻断腺昔与受体结合,让人保持清醒。Coffee makes some people sleepy The reason we get tired throughout the day is because a neurochemical[神经化学物质]called adenosine builds up and passes through receptors,which causes nerve cells to become less active and blood vessels in your brain to dilate[扩张].In short,your body gets the message that ifs time to rest.

关 键 词：受体结合 脑血管扩张 咖啡因 神经细胞 新闻 

分 类 号：G63[文化科学—教育学]