其机制可能是，细胞巯基耗竭，使鸟苷酸环化酶活性降低，致血管平滑肌松弛作用减弱。
The mechanism is probably that the consumption of cell mercapto lowers the activity of guanylate cyclase, thus weakening the slackness of blood vessel's smooth muscles.
目的：研究硝普钠（SNP）与异丙肾上腺素（ISO）对犬气管平滑肌松弛作用是否存在协同关系，并分析协同的机制。
AIM: To evaluate the synergistic action of sodium nitroprusside (SNP) and isoproterenol (ISO) on canine trachealis, and to explore the mechanism of synergism.
有人认为，痛经病人适量饮点酒能通经活络，扩张血管，使平滑肌松弛，对痛经的预防和治疗有作用。
Some people think that, dysmenorrhea patients appropriate to drink liquor point - the active, expanding blood vessels, smooth muscle relaxation on the prevention and treatment of dysmenorrhea a role.
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