上行咽頭動脈・副硬膜動脈・舌動脈

The Ascending Pharyngeal Artery, Accessory Meningeal Artery, Lingual Artery, Vasa Nervorum, and Potential Anastomotic Channels

Point

・上行咽頭動脈は咽頭粘膜，咽頭周囲軟部組織や鼓室，下位脳神経，硬膜に供血するとともに，脳動脈と豊富な潜在的吻合を有する．

・副硬膜動脈は咽頭周囲軟部組織に供血し，三叉神経分枝の神経栄養血管となり，また内頚動脈や顎動脈の分枝と潜在的吻合を有する．

・舌動脈は咽頭粘膜，扁桃，喉頭蓋，舌骨，口腔底や舌に供血し，上甲状腺動脈や顔面動脈，顎動脈の分枝との潜在的吻合を有する．

　The ascending pharyngeal, accessory meningeal, and lingual arteries branch from the proximal segment of the external carotid artery. These branches give rise to smaller branches that contribute blood supply to the pharyngeal mucosa, parapharyngeal tissue, middle ear, submandibular tissues, tongue, and dura mater of the middle and posterior fossa. These arteries may also supply the cranial nerves and have potential anastomotic channels that function with the internal carotid and vertebral arteries. M igration of embolic material into the vasa nervorum and potential anastomoses may cause complications. Therefore, knowledge of these functional anatomies is crucial for neuro-interventionalists.