翻訳と辞書 Words near each other ・ Petrosifungin ・ Petrosiidae ・ Petrosina ・ Petrosinella ・ Petrosino ・ Petrosino (disambiguation) ・ Petrosino Square ・ Petrosix ・ PetroSkills ・ PetroSkills Alliance ・ Petrosoft ・ Petrosomatoglyph ・ Petrosphere ・ Petrosport FC ・ Petrosquamous sinus ・ Petrosquamous suture ・ PetroSun ・ Petrosyan ・ Petrota ・ Petrotel Lukoil Refinery ・ Petrotest ・ Petrotettix ・ PetroTiger ・ Petrotilapia ・ Petrotilapia chrysos ・ Petrotilapia genalutea ・ Petrotilapia nigra ・ Petrotilapia tridentiger ・ Petroto ・ Petroto, Achaea Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Petrosquamous suture ： ウィキペディア英語版 Petrosquamous suture The petrosquamous suture is a cranial suture between the petrous portion and the squama of the temporal bone. The petrous portion forms the medial component of the osseous margin, while the squama forms the lateral component. The anterolateral portion (squama) arises from the mesenchyme at 8 weeks of embryogenesis while the petromastoid portion develops later from a cartilaginous center at 6 months of fetal development. In certain people, it can contain an emissary vein, referred to as the ''petrosquamosal sinus''. Being aware of this anatomic variant with preoperative CT scanning can be important to prevent bleeding in certain types of otolaryngolical surgeries. Some authors have theorized that a persistent venous sinus reflects an arrest in embryologic development.〔 ==See also== * Petrotympanic fissure 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Petrosquamous suture」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.