Zygomaticus major muscle
Citation, DOI, disclosures and article data
Citation:
MacManus D, Bell D, Iqbal S, et al. Zygomaticus major muscle. Reference article, Radiopaedia.org (Accessed on 17 Jan 2025) https://doi.org/10.53347/rID-64926
Permalink:
rID:
64926
Article created:
14 Dec 2018,
Daniel MacManus
Disclosures:
At the time the article was created Daniel MacManus had no recorded disclosures.
View Daniel MacManus's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Daniel J Bell had no recorded disclosures.
View Daniel J Bell's current disclosures
Revisions:
8 times, by
4 contributors -
see full revision history and disclosures
Systems:
Sections:
Synonyms:
- Zygomaticus major muscles
The zygomaticus major muscle is a member of the buccolabial muscle group of the upper lip, a subset of the facial muscles 1. It joins with the muscle fibers of levator anguli oris, orbicularis oris and the more deeply placed muscular bands to move the side of the mouth upwards and sideways during facial movements such as laughing.
On this page:
Summary
- origin: in front of the zygomaticotemporal suture of the zygomatic bone
- insertion: modiolus at the angle of the mouth where it blends with the fibers of levator anguli oris, orbicularis oris and more deeply placed muscular bands
Arterial supply
Innervation
- zygomatic and buccal branches of the facial nerve
Action
- draws the labial commissure (angle of the mouth) backward, upwards and laterally (e.g. when laughing and smiling) 2
See also
References
- 1. Susan Standring. Gray's Anatomy. (2015) ISBN: 9780702052309
- 2. Kyung Won Chung, Harold M. Chung. BRS Gross Anatomy. (2011) ISBN: 9781451110463
Incoming Links
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