胃泌素的生理作用中，哪项是错的() ["A．刺激胃粘膜细胞增殖 ","B．刺激胃粘膜细胞分泌盐酸与胃蛋白酶原 ","C．刺激胃窦与肠运动 ","D．刺激胰液、胆汁分泌 ","E．刺激幽门括约肌收缩"]
下述钾的生理功能中，哪项是错的() ["A．参与细胞内糖和蛋白质的代谢 ","B．高钾使神经肌肉兴奋性降低 ","C．参与静息电位的形成 ","D．高钾抑制心肌收缩 ","E．维持细胞内的渗透压"]
脊髓的动脉来自于() ["A．椎动脉","B．颈内动脉","C．肋间后动脉","D．脑膜中动脉","E．腰动脉"]
用已知B型人的血液与待测者血液做交叉合血，若主反应凝集．次反应不凝集．待测者的血型是() ["A．B型 ","B．O型 ","C．A型 ","D．AB型 ","E．Rh阴性"]
脑的血供来自于() ["A．脑膜中动脉 ","B．颈内动脉 ","C．颞浅动脉 ","D．椎动脉 ","E．颈外动脉"]
CT扫描的缺陷有哪些?
