本实验结果表明,乙酰胆碱或新斯的明能使肠段生物电慢波上的锋波振幅增大、数目增多,其收缩幅度随之增大,两者呈正变关系。而肾上腺素或阿托品则使肠段生物电锋波振幅降低、数目减少,其收缩幅度也随之降低,呈负变关系。上述结果证明,肠段的生物电锋波发生在前,机械收缩产生在后,小肠平滑肌的收缩具有动作电位的依赖性。 The experimental results show that acetylcholine or neostigmine can increase the amplitude of the frontal waves of intestinal bioelectrical slow wave, increasing the number of contraction amplitude increases, the two showed a positive relationship. While epinephrine or atropine is to make intestinal bioelectric front wave amplitude decreased, the number decreased, the contraction rate also will be reduced, showing a negative relationship. The above results show that intestinal bioelectric front wave occurred in the former, after the mechanical contraction, the contraction of the small intestine smooth muscle has an action potential-dependent.