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，平滑肌无横纹状结构，平滑肌
的意志收缩，故称意肌
横纹肌。
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，平滑肌无横纹状结构，平滑肌的意志收缩，故称意肌横纹肌。
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