Ramus pericardiacus

例句：

1. 1. The heart's pericardium is a vital organ that protects the heart from damage.
   心脏的壁是一个重要的器官，它保护心脏免受损伤。
2. 2.During surgery, the surgeon carefully removes the pericardium to access the heart.
   在手术中，外科医生小心地移除心包膜以接触心脏。
3. 3.The patient was given medication to reduce inflammation in the pericardium.
   患者被给予药物以减轻心包膜的炎症。