F波的波幅是A.大于M波B.大于H反射C.为M波波幅的1%~5%D.为M波波幅的50%~100%E.等于M波

作者: rantiku 人气: - 评论: 0
问题 F波的波幅是
选项 A.大于M波 B.大于H反射 C.为M波波幅的1%~5% D.为M波波幅的50%~100% E.等于M波
答案 C
解析 :F波是由运动神经纤维的逆行冲动引起的,此冲动逆行到达前角细胞,再顺向返回导致肌肉收缩。正常情况下,F波波幅恒小于M波,仅为M波波幅的1%~5%。

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