internal cremaster muscle

例句：

1. 1. Thedoctor advised him to exercise regularly to maintainhis health.
   医生建议他定期锻炼以保持健康。
2. 2. During the surgery, the surgeonhad to use the internal sphincter muscle to control bleeding.
   手术期间，外科医生必须使用内部括约肌来控制出血。
3. 3. The patient was instructed toavoid strenuous activities and to restfrequently during recovery.
   病人被告知在康复期间避免剧烈运动，并经常休息。