noun 下载 🔗分享 肾上腺素 A catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized from norepinephrine. Examples : "During a severe allergic reaction, doctors often use epinephrine to quickly raise blood pressure and open airways. " 在严重的过敏反应期间，医生经常使用肾上腺素来快速升高血压和扩张气道。 medicine physiology biochemistry body substance chemistry 与AI对话词汇游戏阅读练习
