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MuscleOriginInsertionActionNerve
levator palpebrae superioris CS AN Levator Palpebrae Superioris_Latlesser wing of sphenoid bone (anterior surface)upper eyelid (fascia & skin)elevates upper eyelidoculomotor nerve (CN III)
buccinator CS AN Buccinatormaxilla & mandible (posterior alveolar process of both bones); pterygomandibular raphemodiolus (just lateral to the angle of the mouthcompresses cheek(s)facial nerve (CN VII)
corrugator supercilii CS AN Corrigator Supercilifrontal bone just above nose (lateral to glabella)skin of medial portion of eyebrowsdraws eyebrows downward & medially ("thinker's brow")facial nerve (CN VII) (zygomatic branch)
depressor anguli oris CS AN Depressor Angulialong oblique line of mandible; lateral aspect of mental tubercle of mandiblemodiolus (near angle of mouth)depresses angle(s) of mouth (frown)facial nerve (CN VII)
depressor labii inferioris CS AN Depressor Labii Inferiorismandible (between symphysis & mental foramen)skin & fascia of lower lipdraws lower lip downward & laterally; everts lower lipfacial nerve (CN VII)
depressor septi nasi CS AN Depressor Septiincisive fossa of maxillaseptum & alar cartilage of noseconstricts notrilsfacial nerve (CN VII)
frontalis CS AN Occipitofrontalis_With Eye and Eargalea aponeuroticaskin & fascia above nose & eyesdraws scalp posteriorly to raise eyebrows & wrinkle brow (surprise)facial nerve (CN VII), temporal branch of
levator anguli oris CS AN Levator Anguli Orisbelow infraorbital foramen of maxillamodiolus (near angle of mouth)elevates angle(s) of mouth (smiling)facial nerve (CN VII)
levator labii superioris CS AN Levator Labii Superiorismedial inferior orbital margin of maxillaupper lip muscleselevates upper lip; everts upper lipfacial nerve (CN VII)
levator labii superioris alaeque nasi CS AN Levator Aleque Nasifrontal process of maxillalateral slip: upper lip muscles; medial slip: alar cartilage of noseelevates upper lip; flares nostrils; everts upper lipfacial nerve (CN VII)
mentalis CS AN Mentalisincisive fossa of mandibleskin & fascia of chinelevation of lower lip; everts lower lip; wrinkles skin of chinfacial nerve (CN VII)
nasalis CS AN Nasalistransverse part: maxilla (lateral to nose); alar part: maxilla, superior to canine alveolar processtransverse part: opposite side nasalis over upper cartilage of nose; alar part: alar cartilage of nose (nasal wing)flares nostrils (particularly in forced respiration)facial nerve (CN VII)
occipitalis CS AN Occipitofrontalis_With Eye and Earlateral 2/3 of superior nuchal line & EOPgalea aponeuroticadraws back scalp to raise eyebrows & wrinkle brow (surprise)facial nerve (CN VII), posterior auricular branch
orbicularis oculi CS AN Orbicularis Occuliorbital portion: nasal process of frontal bone; palpebral portion: palpebral ligament; lacrimal portion: lacrimal crest of lacrimal bonecircumferentially around orbit meeting at the origincloses eye tightly, squinting of the eye; depresses upper eye lid, elevates lower eyelid (palpebral part)facial nerve (CN VII) (zygomatic branch)
orbicularis oris CS AN Orbicularis Orismodiolus (just lateral to angle of mouth)circumferentially around mouth; blends with other musclescloses mouth; protrudes lips (puckering of lips)facial nerve (CN VII)
platysma CS AN Platysmasubcutaneous fascia (over deltoid-pectoral region)mandible & subcutaneous fascia of lower facetenses skin over lower neck (creates ridge in skin); depress mandible & lower lipfacial nerve (CN VII)
procerus CS AN Procerusnasal bone & cartilagesSkin & fascia between eyebrowsdraws medial eyebrow downward (menacing expression); wrinkles skin of superior nosefacial nerve ( CN VII) (superior buccal branches)
risorius CS AN Risorius  parotid fascia (superficial to masseter)modiolus (near angle of mouth)draws angle of mouth laterally (false smile)facial nerve (CN VII)
zygomaticus major CS AN Zygomaticus Majorzygomatic bone (anterior to zygomatic-temporal suture)modiolus (near angle of mouth)elevates angle of mouth (smiling); pulls angle of mouth laterallyfacial nerve (CN VII)
zygomaticus minor CS AN Zygomaticus Minorzygomatic bone (posterior to zygomaticmaxillary suture)skin, fascia & muscles of upper lipelevates upper lip (smile); everts upper lipfacial nerve (CN VII)
        The jaws are opened by the lateral pterygoid muscle & are closed by the temporalis, masseter, & medial pterygoid.
MuscleOriginInsertionActionNerve
Lateral pterygoid CS AN Pterygoid_Latsuperior head: greater wing of sphenoid; inferior head: lateral surface of lateral pterygoid platesuperior head: capsule & articular disc of TMJ; inferior head: neck of mandibular condyleprotraction of the mandible; lateral deviation of mandible to side opposite of contraction (during chewing)trigeminal nerve (CN V)
Masseter CS AN Massetersuperficial part: zygomatic process of maxilla; inferior border of zygomatic arch; deep part: posterior aspect of inferior border of zygomatic archsuperficial part: angle & ramus of mandible; deep part: superior ramus & coronoid process of mandibleelevation of mandible (clenches teeth); protraction of mandible; retraction of mandibletrigeminal nerve (CN V)
Medial pterygoid CS AN Pterygoid_Medmedial surface of lateral pterygoid plate of sphenoid; palatine bone & pterygoid fossainner surface of mandibular ramus & angle of mandibleelevation of mandible (clenches teeth); protraction of mandible; lateral deviation of mandibletrigeminal nerve (CN V)
Temporalis CS AN Temporalistemporal fossacoronoid process & ramus of mandibleelevation of mandible; retraction of mandible (posterior fibers)trigeminal nerve (CN V) (mandibular branch)
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These muscle tables are often slightly different than those found in the muscle manual and other texts to allow students learning to realize there are subtle differences in anatomical variation and nomenclature ultimate allowing you to be more aware of real life presentation – after 15 years and over 400 cadaver dissections this author is always amazed at the differences found in the human body every time we are in the cadaver lab – all text books and videos are only accurate to a point!