脊麻时下面哪一项下降最大() ["A．右房压","B．左房压","C．心排血指数","D．平均动脉压","E．肺动脉压力"]
某男，l8岁，平时多汗，活动或进食则大汗出，夜间睡时亦常汗出，此因() ["气虚","阴虚","血虚","阳虚","气阴两虚"]
椎管内麻醉血压下降的主要原因是() ["A．肌肉松弛","B．心交感神经节阻滞","C．交感神经阻滞","D．副交感神经阻滞","E．中枢交感神经介质释放减少"]
某男，66岁，腰部冷痛沉重，每于阴雨天或天气骤冷则疼痛加剧，此因() ["瘀血阻络","肾阳虚","寒湿困阻","结石阻滞","带脉损伤"]
出生时即具有_____、_____、_____、_____、_____等先天性反射和对_____、_____、_____的反应。
身高包括______、______和______的长度。
