uterine smooth muscle

例句：

1. 1.The uterine smooth muscle is responsible for the contraction of the uterus during childbirth.
   子宫平滑肌在分娩过程中负责子宫的收缩。
2. 2.Uterine smooth muscle plays a crucial role in maintaining pregnancy and regulating menstruation.
   子宫平滑肌在维持妊娠和调节月经方面起着至关重要的作用。
3. 3.During labor, the uterine smooth muscle undergoes significant changes that contribute to the delivery process.
   在分娩过程中，子宫平滑肌经历显著变化，这些变化有助于生产过程。