Zygomaticus major muscle

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Zygomatic major
Muscles of the head, face, and neck.
Latin Zygomaticus major
Origin: anterior of zygomatic
Insertion: modiolus of mouth
Blood: facial artery
Nerve: buccal branch of facial nerve
Action: draws angle of mouth

The Zygomatic major is a muscle of the human body. It is a muscle of facial expression which draws the angle of the mouth superiorly and posteriorly. Like all muscles of facial expression, the zygomatic major is innervated by the facial nerve (Cranial Nerve VII).

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The Zygomaticus extends from each zygomatic arch (cheekbone) to the corners of the mouth. It raises the corners of the mouth when a person smiles.

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Muscles of the HeadNeckTrunkUpper limbLower limbLIST OF ALL MUSCLES

scalp/eyelid: occipitofrontalis (occipitalis, frontalis) - orbicularis oculi - corrugator supercilii - depressor supercilii | (Gray's s105 - Gray's s106)

nose: procerus - nasalis - depressor septi nasi - dilatator naris posterior - dilatator naris anterior - levator labii superioris alaeque nasi | (Gray's s107)

mouth: levator labii superioris - levator anguli oris - zygomaticus (major, minor) - mentalis - depressor labii inferioris - depressor anguli oris - buccinator - orbicularis oris - risorius | (Gray's s108)

mastication: masseter - temporalis - pterygoid (lateral, medial) | (Gray's s109)

extraocular: levator palpebrae superioris - superior tarsal - rectus (superior, inferior, medial, lateral) - oblique (superior, inferior) | intraocular: ciliary - iris dilator - iris sphincter | (Gray's s227)

hearing: auricularis anterior - stapedius - tensor tympani | (Gray's s228-Gray's s232)

larynx: cricothyroid - posterior cricoarytenoid - lateral cricoarytenoid - arytenoid - thyroarytenoid | (Gray's s236)

tongue: extrinsic (genioglossus - hyoglossus - chondroglossus - styloglossus) intrinsic (superior longitudinal - inferior longitudinal - transversus - verticalis) | (Gray's s242)

palate: levator veli palatini - tensor veli palatini - musculus uvulae - palatoglossus - palatopharyngeus | (Gray's s243)

pharynx: pharyngeal constrictor (inferior, middle, superior) - stylopharyngeus - salpingopharyngeus | (Gray's s244)

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