In this article, the topic of Zygomatic arch will be addressed from a multidisciplinary perspective, analyzing its implications in different areas. Zygomatic arch is a topic of great relevance today and has aroused widespread interest in the academic community and the general public. Throughout the text, different aspects related to Zygomatic arch will be examined, such as its history, its effects on society, its impact on the economy, among others. In this way, it is intended to offer a comprehensive and complete vision of Zygomatic arch, delving into its various dimensions and its possible implications for the present and the future.
Zygomatic arch | |
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Details | |
Identifiers | |
Latin | arcus zygomaticus |
MeSH | D015050 |
TA98 | A02.1.00.023 |
TA2 | 427 |
FMA | 53120 |
Anatomical terminology |
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).
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.
The zygomatic process of the temporal arises by two roots:
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 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.
This article incorporates text in the public domain from page 183 of the 20th edition of Gray's Anatomy (1918)