眼窩突起（口蓋骨）　（ がんかとっき、 英：orbital process ）

 

　　

　

口蓋骨（後面）
眼窩突起の面
口蓋骨（上顎面）
口蓋骨（鼻腔面）
右眼窩（内側壁）　

 

以下は「Wikipedia」の解説文となる。

　The orbital process of the palatine bone is placed on a higher level than the sphenoidal, and is directed upward and lateralward from the front of the vertical part, to which it is connected by a constricted neck. 　It presents five surfaces, which enclose an air cell. Of these surfaces, three are articular and two non-articular.
　The articular surfaces are:

  1. the anterior or maxillary, directed forward, lateralward, and downward, of an oblong form, and rough for articulation with the maxilla
  2. the posterior or sphenoidal, directed backward, upward, and medialward; it presents the opening of the air cell, which usually communicates with the sphenoidal sinus; the margins of the opening are serrated for articulation with the sphenoidal concha
  3. the medial or ethmoidal, directed forward, articulates with the labyrinth of the ethmoid

【 語 句 】

・sphenoidal：蝶形骨の 　・vertical part：垂直部（＝垂直板）　・constrict：締め付ける、収縮させる 　・air cell：含気蜂巣　・oblong：長方形 　・maxilla：上顎骨　・sphenoidal sinus：蝶形骨洞 　・serrated：鋸歯状の　・sphenoidal concha：蝶形骨甲介 　

　In some cases the air cell opens on this surface of the bone and then communicates with the posterior ethmoidal cells. More rarely it opens on both surfaces, and then communicates with the posterior ethmoidal cells and the sphenoidal sinus.
The non-articular surfaces are:

  1. the superior or orbital, directed upward and lateralward; it is triangular in shape, and forms the back part of the floor of the orbit; and
  2. the lateral, of an oblong form, directed toward the pterygopalatine fossa; it is separated from the orbital surface by a rounded border, which enters into the formation of the inferior orbital fissure.

【 語 句 】

・orbit：眼窩 　・pterygopalatine fossa：翼口蓋窩　・inferior orbital fissure：下眼窩裂 　

 

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