Zygomatic process of temporal bone 5642268 213701789 2008-05-20T14:02:49Z Gracillis 4775916 [[th:ส่วนยื่นกระดูกขมับจดกระดูกโหนกแก้ม]] {{Infobox Bone | Name = Zygomatic process of temporal bone | Latin = processus zygomaticus ossis temporalis | GraySubject = 34 | GrayPage = 139 | Image = Gray137.png | Caption = Left [[temporal bone]]. Outer surface. Showing the zygomatic process projecting to the left side of the bone | Image2 = Processuszygomaticusossisfrontalis.PNG | Caption2 = Articulation of the mandible. Lateral aspect. (Zygomatic process visible at center.) | System = | MeshName = | MeshNumber = | DorlandsPre = p_34 | DorlandsSuf = 12667776 | }} The '''zygomatic process of the temporal bone''' is a long, arched process projecting from the lower part of the [[Squama temporalis|squamous portion]] of the [[temporal bone]]. It articulates with the [[zygomatic bone]]. This process is at first directed lateralward, its two surfaces looking upward and downward; it then appears as if twisted inward upon itself, and runs forward, its surfaces now looking medialward and lateralward. ==Borders== The superior border is long, thin, and sharp, and serves for the attachment of the [[temporal fascia]]. The inferior border, short, thick, and arched, has attached to it some fibers of the [[Masseter muscle|masseter]]. ==Surfaces== The lateral surface is convex and subcutaneous. The medial surface is concave, and affords attachment to the masseter. ==Ends== The anterior end is deeply serrated and articulates with the [[zygomatic bone]]. The posterior end is connected to the squama by two roots, the anterior and posterior roots. * The posterior root, a prolongation of the upper border, is strongly marked; it runs backward above the [[external auditory meatus]], and is continuous with the [[temporal line]]. * The anterior root, continuous with the lower border, is short but broad and strong; it is directed medialward and ends in a rounded eminence, the [[articular tubercle]] (eminentia articularis). ==See also== * [[Zygomatic arch]] ==Additional images== <gallery> Image:Gray164.png|Left zygomatic bone in situ. Image:Gray187.png|Base of skull. Inferior surface. </gallery> ==External links== * {{RocheLexicon|34257.000-1}} {{Gray's}} {{musculoskeletal-stub}} [[Category:Skeletal system]] [[Category:Skull]] {{Skull}} [[sv:Okbensbåge]] [[th:ส่วนยื่นกระดูกขมับจดกระดูกโหนกแก้ม]]