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The zygomaticus major muscle is a muscle of the face. It arises from either zygomatic arch ; it inserts at the corner of the mouth. It is innervated by branches of the facial nerve (cranial nerve VII). It is a muscle of facial expression, which draws the angle of the mouth superiorly and posteriorly to allow one to smile. Bifid zygomaticus ...
zygomaticus major: head, mouth (left/right) zygomatic bone in region of zygomaticomaxillary suture modiolus of mouth: facial artery: facial nerve [CNVII], buccal branch: draws angle of mouth upward and laterally 2 1 zygomaticus minor: head, mouth (left/right) zygomatic bone in region of zygomaticomaxillary suture skin of upper lip: facial artery
Zygomaticus major muscle; Zygomaticus minor muscle; Levator labii superioris; Levator labii superioris alaeque nasi muscle; Depressor labii inferioris muscle; Levator anguli oris; Buccinator muscle; Mentalis; The platysma is supplied by the facial nerve. Although it is mostly in the neck and can be grouped with the neck muscles by location, it ...
Zygomaticus major muscle (associated with smiling). Facial EMG has been studied to assess its utility as a tool for measuring emotional reaction. [3] Studies have found that activity of the corrugator muscle, which lowers the eyebrow and is involved in producing frowns, varies inversely with the emotional valence of presented stimuli and reports of mood state [citation needed].
Others believe it's due to variations in the "Zygomaticus major muscle." But some people want dimples so badly that they are willing to go under the knife for it.
It is contributed to by at least nine muscles: orbicularis oris, buccinator, levator anguli oris, depressor anguli oris, zygomaticus major, zygomaticus minor, risorius, quadratus labii superioris, quadratus labii inferioris. [1] [2] Its position and movements are important in moving the mouth, facial expression and in prosthetic dentistry. It ...
Dimples are usually located on mobile tissue, [5] [6] and are possibly caused by variations in the structure of the facial muscle known as zygomaticus major. Specifically, the presence of a double or bifid zygomaticus major muscle may explain the formation of cheek dimples. [7]
The zygomatic branches of the facial nerve (malar branches) are nerves of the face.They run across the zygomatic bone to the lateral angle of the orbit.Here, they supply the orbicularis oculi muscle, and join with filaments from the lacrimal nerve and the zygomaticofacial branch of the maxillary nerve (CN V 2).