truncus sympathicus

例句：

1. 1. The truncus sympathicus is responsible for regulating blood pressure and heart rate during sleep.
   副交感神经干负责在睡眠期间调节血压和心率。
2. 2.During the operation, the surgeon made a small incision in the truncus sympathicus to access the affected area.
   手术中，外科医生在副交感神经干上做了一个小切口以进入受影响的区域。
3. 3. The patient was given medication to reduce the swelling and pain in the truncus sympathicus.
   患者被给予药物以减轻副交感神经干的肿胀和疼痛。