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在豚鼠肠系膜下神经节(IMG)及其支配的结肠段联合标本上,对 IMG 细胞内电位与肠段舒缩活动进行了同步记录.实验发现:①肠段预置张力为零时,54%(n=100)IMG 细胞有自发的频率为2-50Hz 的快兴奋性突触后电位(EPSP),切断结肠神经或以筒箭毒(50μmol/L)灌流 IMG 后消失;②简箭毒或低钙高
Simultaneous recordings of IMG intracellular potential and intestine contraction and contractility were performed in guinea pigs with inferior mesenteric ganglion (IMG) and its dominant colonic segment.It was found that: (1) when intestinal preset tension was zero, 54% (n = 100). The spontaneous fast excitatory postsynaptic potential (EPSP) of 2-50 Hz in IMG cells disappeared after cutting off the colon nerve or perfusing IMG with Myotubes (50 μmol / L) Low calcium