Zygomatic arch
330304
225724141
2008-07-15T02:30:37Z
76.189.113.177
{{Infobox Anatomy |
Name = {{PAGENAME}} |
Latin = arcus zygomaticus |
GraySubject = 46 |
GrayPage = 183 |
Image = Gray188-Sphenozygomatic suture.png |
Caption = Side view of the skull. |
Image2 = Processuszygomaticusossisfrontalis.PNG |
Caption2 = Articulation of the mandible. Lateral aspect. |
Precursor = |
System = |
Artery = |
Vein = |
Nerve = |
Lymph = |
MeshName = |
MeshNumber = |
DorlandsPre = a_58 |
DorlandsSuf = 12150836 |
}}
The '''zygomatic arch''' is formed by the [[zygomatic process of temporal bone]] (a bone extending forward from the side of the [[skull]], over the opening of the ear) and the temporal process of the [[zygomatic bone]] (the side of the cheekbone), the two being united by an oblique suture; the tendon of the [[Temporalis]] passes medial to the arch to gain insertion into the [[coronoid process]] of the [[mandible]].
The zygomatic process of the temporal arises by two roots:
* an ''anterior'', directed inward in front of the [[mandibular fossa]], where it expands to form the articular tubercle.
* a ''posterior'', which runs backward above the [[external acoustic meatus]] and is continuous with the supramastoid crest.
The upper border of the arch gives attachment to the [[temporal fascia]]; the lower border and medial surface give origin to the [[Masseter]].
==Additional images==
<gallery>
Image:Gray137.png|Left temporal bone. Outer surface.
Image:Gray165.png|Left zygomatic bone. Malar surface.
Image:Gray187.png|Base of skull. Inferior surface.
Image:Gray382.png|The Temporalis; the zygomatic arch and Masseter have been removed.
Image:Gray1024.png|Dissection, showing salivary glands of right side.
</gallery>
==External links==
* {{eMedicineDictionary|Zygomatic+arch}}
* {{NormanAnatomy|lesson1}} ({{NormanAnatomyFig|latskullitems}})
* {{RocheLexicon|34257.000-1}}
* [http://www.unc.edu/~jbl/PanAnatomy/skull%20images/zygomatic-arch-s.html Diagram at unc.edu]
{{Gray's}}
{{musculoskeletal-stub}}
{{Sutures}}
[[ca:Arc zigomàtic]]
[[pl:Łuk jarzmowy]]
[[uk:Виличні дуги]]