Zygomaticus Major Origin


The zygomaticus major muscle starts at the cheekbone and extends to the corner of the mouth. This muscle causes the corners of a person's mouth to rise when they smile. Variations of the zygomaticus major muscle cause dimples to form.

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The zygomaticus major is a muscle of the human bodyIt is a muscle of facial expression which draws the angle of the mouth superiorly and posteriorly to allow one to smile Like all muscles of facial expression the zygomatic major is innervated by the facial nerve the seventh cranial nerve more specifically the buccal and zygomatic branches of the facial nerve

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The zygomaticus major muscle is a muscle that controls facial expression drawing the mouths angle upward and outward The zygomaticus major muscle starts at the cheekbone and extends to the

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The zygomaticus minor is a muscle of facial expression It originates from zygomatic bone and continues with orbicularis oculi on the lateral face of the levator labii superioris and then inserts into the outer part of the upper lip It draws the upper lip backward upward and outward and is used in smiling Like all muscles of facial expression it is innervated by the facial nerve CN VII

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NAME ORIGIN INSERTION ACTION NERVE Frontalis galea aponeurotica skin of eyebrows and  raises the eyebrows Facial root of nose  wrinkles the forehead 1 horizontally 1 Corrugator supercilii arch of frontal bone skin of eyebrow  draws eyebrows medially Facial above nasal bone and inferiorly 2 EYE EXPRESSIONS 2  wrinkles the forehead 4 vertically frowning Levator palpebrae superioris

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NAME ORIGIN INSERTION ACTION NERVE M ANDIBLE M OVERS Masseter 20 zygomatic arch and maxilla angle amp ramus of mandible  prime mover of jaw closure  elevates mandible Trigeminal Temporalis

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The Human Anatomy and Physiology course is designed to introduce students pursuing careers in the allied health field to the anatomy and physiology of the human body

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The supraspinatus is named for its location on the posterior aspect of the scapula above the spine What is its action a to flex and adduct the humerus and to act as a synergist of the pectoralis major

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Muscle names are named according to a set of informal rules and once you understand those rules you can pretty much tell where any muscle is located and what it does Learn about human anatomy of muscles

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