| 释义 |
smooth musclen.（名词）- Muscle tissue that contracts without conscious control, having the form of thin layers or sheets made up of spindle-shaped, unstriated cells with single nuclei and found in the walls of the internal organs, such as the stomach, intestine, bladder, and blood vessels, excluding the heart.平滑肌：由长梭形的、无横纹的单核型细胞组成的薄层状肌肉组织，其伸缩不受意念控制，存在于胃、肠、膀胱和血管等内脏壁上，但心脏除外
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