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Monday, September 17, 2018

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The zygomatic process of the temporal bone is a long, arched process projecting from the lower part of the 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.

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.


Video Zygomatic process of temporal bone



Surfaces

The lateral surface is convex and subcutaneous.

The medial surface is concave, and affords attachment to the masseter.


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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 th.
  • 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).

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See also

  • Zygomatic arch
  • Zygomatic complex fracture

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Additional images


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References

This article incorporates text in the public domain from page 139 of the 20th edition of Gray's Anatomy (1918)


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External links

  • "Anatomy diagram: 34257.000-1". Roche Lexicon - illustrated navigator. Elsevier. Archived from the original on 2014-01-01. 

Source of article : Wikipedia