When viewed from a microscope, there is no striation presented in the muscle, and moreover, since it is no controlled by our willpower, it is called involuntary, nonstriated muscle.
从纤维镜下观察，
滑肌
，滑肌不随人的意志收缩，故称不随意肌非肌。
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通常作为围绕管样结构的肌纤维鞘而
在。用显微镜观察时，肌肉上并不
