腹腔穿刺抽出不凝固血液提示________。
乙酰胆碱是对全身麻醉最重要神经递质。()
下列哪些属于神经肽类神经递质() ["A．P物质","B．GABA","C．脑啡肽","D．促肾上腺素释放的激素(TRH)","E．多巴胺"]
下列不会引起继发性腹膜炎的是() ["A．上呼吸道感染","B．胃十二肠溃疡穿孔","C．胆囊穿孔","D．急性坏疽性阑尾炎","E．肺炎"]
目前普遍认为，中枢神经递质大体可分哪几类() ["A．传统神经递质","B．肾上腺皮质激素类递质","C．氨基酸类递质","D．阿片类递质","E．神经肽类递质"]
全身中毒症状最重的腹腔脓肿是________。
