cranial periosteum

例句：

1. 1.The surgeon removed the cranial periosteum to access the brain.
   外科医生移除了颅骨外板以进入大脑。
2. 2.The patient's cranial periosteum was severely damaged during the accident.
   患者在事故中颅骨外板严重受损。
3. 3.The cranial periosteum is a vital structure that supports the skull and protects the brain.
   颅骨外板是一个重要的结构，它支撑着头颅并保护大脑。