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，平滑
横纹状结构，平滑不随
的意志收缩，
称不随意非横纹。
)
横纹的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，平滑横纹状结构，平滑不随的意志收缩，称不随意非横纹。
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