心正常起搏点是A．房室结B．房室束C．窦房结D．左右束支E．普肯耶纤维(purkinje)

作者: rantiku 人气: - 评论: 0

问题心正常起搏点是

选项 A．房室结 B．房室束 C．窦房结 D．左右束支 E．普肯耶纤维(purkinje)

答案 C

解析：窦房结是心的正常起搏点，位于上腔静脉与右心房交界处界沟上部的心外膜深面，略呈长椭圆形。

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