Ramus meningeus accessorius

例句：

1. 1. The patient'scondition was complicated by the presence of aRamus meningeus accessorius.
   患者的病情复杂，因为存在一个脑膜血管丛。
2. 2. The surgery involved removing theRamus meningeus accessorius to relieve pressure on the brain.
   手术包括切除脑膜血管丛以减轻对大脑的压力。
3. 3. The medical team performed an emergencycraniotomy to remove theRamus meningeus accessorius, which had caused severe headaches.
   医疗团队进行了紧急的开颅手术，以移除导致严重头痛的脑膜血管丛。