Smooth muscle can not be controlled by the will, it is also called involuntary muscle.

平滑肌不能由意志控制，所以又称为不随意肌。

youdao

Smooth muscle can not be controlled by the will, it is also called involuntary muscle.

平滑肌不能由意志控制，所以又称为不随意肌。

youdao