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Muscles-Face & Neck

Muscles of the Face & Neck - origin, insertion, action

TermDefinition
Frontalis (Epicranius: Frontal Belly) origin-epicranial aponeurosis or galea aponeurotica, insertion-skin superior to eyelids, action-elevates eyebrows
Occipitalis origin-superior nuchal line-occipital bone, insertion-epicranial aponeurosis, action-aid frontal belly
corrugator supercilii origin-orbital rim of frontal bone near nasal suture, insertion-skin of eyebrows, action-pulls skin inferior & laterally
orbicularis oculi origin-maxilla & frontal, insertion-skin around the eyelids, action-closes eye
orbicularis oris origin-maxilla & frontal, insertion-angles of the mouth, action-compresses
buccinator origin-maxilla & mandible, insertion-orbicularis oris, action-compresses cheeks
risorius origin-fascia surrounding parotid salivary gland, insertion-angle of mouth, action-draws angle of mouth laterally
zygomaticus major origin-zygomatic bone, insertion-angle of mouth, action-elevate & laterally retracts angle of mouth
levator labii superioris origin-maxilla & zygomatic bone, insertion-orbicularis oris, action-elevates upper lip
depressor labii inferioris origin-mandible (between the anterior midline and the mental foramen), insertion-skin of lower lip, action-depresses lower lip
depressor anguli oris (triangularis) origin-mandible (anterolateral surface), insertion-angle of mouth, action-depresses angle of mouth
mentalis origin-incisive fossa of mandible, insertion-skin of chin, action-elevate
procerus origin-nasal bones and lateral nasal cartilages, insertion-aponeurosis at bridge of nose and skin of forehead, action-changes position & shape of nostrils
nasalis origin-maxillary bone and alar cartilage of nose, insertion-bridge of nose, action-compresses bridge of nose
platysma origin-superior thorax between cartilage of 2nd rib and acromion of scapula, insertion-mandible & skin of cheek, action-tenses skin of neck
masseter origin-zygomatic arch, insertion-angle of mandible, action-elevate mandible
temporalis origin-temporal lines of skull, insertion-coronoid process of mandible, action-elevates mandible
levator anguli oris origin-maxilla below the infraorbital foramen, insertion-angle of mouth (corner of mouth), action-raises angle of mouth
zygomaticus minor Origin-zygomatic bone, Insertion-upper lip, Action-raises upper lip
sternocleidomastoid (cut) origin:-one head attaches to sternal end of clavicle the other head attaches to manubrium, insertion-mastoid region of skull and lateral portion of superior nuchal line, action-flexes the neck one alone bends head toward shoulder and rotates neck
sternocleidomastoid (sternal heads) origin-one head attaches to sternal end of clavicle the other head attaches to manubrium, insertion-mastoid region of skull and lateral portion of superior nuchal line, action-flexes the neck one alone bends head toward shoulder and rotates neck
sternocleidomastoid (cut heads) origin-one head attaches to sternal end of clavicle the other head attaches to manubrium, insertion-mastoid region of skull and lateral portion of superior nuchal line, action-flexes the neck one alone bends head toward shoulder and rotates neck
Inferior rectus origin-sphenoid around optic canal, insertion-inferior, action:-looks inferiorly
Medial rectus origin-sphenoid around optic canal, insertion-medial surface of eyeball, action-eye looks medially
Superior rectus origin-sphenoid around optic canal, insertion-superior surface of eyeball, action-eye looks superiorly
Lateral rectus origin-sphenoid around optic canal, insertion-lateral surface of eyeball, action-eye looks laterally
Inferior oblique origin-maxillary bone at anterior portion of orbit, insertion-inferior, action- eye rolls looks superiorly and laterally
Superior oblique origin-sphenoid around optic canal, insertion-superior, action-eye rolls, looks inferiorly and laterally
Created by: droesener
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