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In anatomy, the zygomatic arch, or cheek bone, is a part of the skull formed by the zygomatic process of the 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 zygomaticotemporal suture); the tendon of the temporal muscle passes medial to (i.e. through the middle of) the arch, to gain insertion into the coronoid process of the mandible (jawbone).

Zygomatic arch
Side view of the skull.
Articulation of the mandible. Lateral aspect.
Details
Identifiers
Latinarcus zygomaticus
MeSHD015050
TA98A02.1.00.023
TA2427
FMA53120
Anatomical terminology

The jugal point is the point at the anterior (towards face) end of the upper border of the zygomatic arch where the masseteric and maxillary edges meet at an angle, and where it meets the process of the zygomatic bone.[clarification needed]

The arch is typical of Synapsida (“fused arch”), a clade of amniotes that includes mammals and their extinct relatives, such as Moschops and Dimetrodon.

Contents

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.

High cheekbones are pronounced zygomatic arches, causing the upper part of the cheeks to jut out and form a line cut into the sides of the face. High cheekbones, forming a symmetrical face shape, are very common in fashion models and may be considered a beauty trait in both males and females within Eurocentric beauty standards.

The zygomatic arch on a man

The term zygomatic derives from the Greek ζύγωμα zygōma, meaning "bolt, bar", derived from ζυγο-, "yoke, join". The Greek word was already used with this anatomical sense by Galen (2.437, 746) in the 2nd century AD. The zygomatic arch is occasionally referred to as the zygoma, but this term usually refers to the zygomatic bone or occasionally the zygomatic process.

The zygomatic arch is significant in evolutionary biology, as it is part of the structures derived from the ancestral single temporal fenestra of the synapsid ancestor of mammals.

  • Left temporal bone, outer surface

  • Left zygomatic bone, malar surface

  • Base of skull, inferior surface

  • The temporalis; the zygomatic arch and masseter have been removed.

  • Dissection, showing salivary glands of right side

  • Fracture of the zygomatic arch as seen on plain X-ray

  • Zygomatic arch, base of skull

This article uses anatomical terminology.

This article incorporates text in the public domain from page 183 of the 20th edition of Gray's Anatomy (1918)

  1. Herring, Susan W.; Mucci, Robert J. (1991). "In vivo strain in cranial sutures: The zygomatic arch". Journal of Morphology. 207 (3): 225–239. doi:10.1002/jmor.1052070302. ISSN 0362-2525. PMC2814820. PMID 1856873.
  2. Abul-Hassan HS, von Drasek Ascher G, Acland RD (January 1986). "Surgical anatomy and blood supply of the fascial layers of the temporal region". Plastic and Reconstructive Surgery. 77 (1): 17–28. doi:10.1097/00006534-198601000-00004. PMID 3941846. S2CID 34872321.
  3. Sex and Society. Marshall Cavendish. September 2009. p. 91. ISBN 978-0-7614-7906-2. Retrieved2 November 2012.

Zygomatic arch Article Talk Language Watch Edit In anatomy the zygomatic arch or cheek bone is a part of the skull formed by the zygomatic process of the 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 zygomaticotemporal suture 1 the tendon of the temporal muscle passes medial to i e through the middle of the arch to gain insertion into the coronoid process of the mandible jawbone Zygomatic archSide view of the skull Articulation of the mandible Lateral aspect DetailsIdentifiersLatinarcus zygomaticusMeSHD015050TA98A02 1 00 023TA2427FMA53120Anatomical terminology edit on Wikidata The jugal point is the point at the anterior towards face end of the upper border of the zygomatic arch where the masseteric and maxillary edges meet at an angle and where it meets the process of the zygomatic bone clarification needed The arch is typical of Synapsida fused arch a clade of amniotes that includes mammals and their extinct relatives such as Moschops and Dimetrodon Contents 1 Structure 2 Society and culture 3 Etymology 4 Other animals 5 Additional images 6 See also 7 References 8 External linksStructure EditThe 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 2 the lower border and medial surface give origin to the masseter Society and culture EditHigh cheekbones are pronounced zygomatic arches causing the upper part of the cheeks to jut out and form a line cut into the sides of the face High cheekbones forming a symmetrical face shape are very common in fashion models and may be considered a beauty trait in both males and females within Eurocentric beauty standards 3 Etymology Edit The zygomatic arch on a man The term zygomatic derives from the Greek zygwma zygōma meaning bolt bar derived from zygo yoke join The Greek word was already used with this anatomical sense by Galen 2 437 746 in the 2nd century AD The zygomatic arch is occasionally referred to as the zygoma but this term usually refers to the zygomatic bone or occasionally the zygomatic process Other animals EditThe zygomatic arch is significant in evolutionary biology as it is part of the structures derived from the ancestral single temporal fenestra of the synapsid ancestor of mammals Additional images Edit Left temporal bone outer surface Left zygomatic bone malar surface Base of skull inferior surface The temporalis the zygomatic arch and masseter have been removed Dissection showing salivary glands of right side Fracture of the zygomatic arch as seen on plain X ray Zygomatic arch base of skullSee also Edit Anatomy portal This article uses anatomical terminology Zygoma fracture Zygomasseteric system Zygomatic complex fracture Zygomaticotemporal sutureReferences Edit This article incorporates text in the public domain from page 183 of the 20th edition of Gray s Anatomy 1918 Herring Susan W Mucci Robert J 1991 In vivo strain in cranial sutures The zygomatic arch Journal of Morphology 207 3 225 239 doi 10 1002 jmor 1052070302 ISSN 0362 2525 PMC 2814820 PMID 1856873 Abul Hassan HS von Drasek Ascher G Acland RD January 1986 Surgical anatomy and blood supply of the fascial layers of the temporal region Plastic and Reconstructive Surgery 77 1 17 28 doi 10 1097 00006534 198601000 00004 PMID 3941846 S2CID 34872321 Sex and Society Marshall Cavendish September 2009 p 91 ISBN 978 0 7614 7906 2 Retrieved 2 November 2012 External links EditLesson1 at The Anatomy Lesson by Wesley Norman Georgetown University latskullitems Anatomy diagram 34257 000 1 Roche Lexicon illustrated navigator Elsevier Archived from the original on 2012 07 22 Retrieved from https en wikipedia org w index php title Zygomatic arch amp oldid 1092396686, wikipedia, wiki, book,

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