Head Region Muscles - Origin, Insertion, Action, Innervation
innervation - Sternocleidomastoid, Clavicular head
Accessory nerve NXI and cervical spinal nerves (c2-c3) of cervical plexus
innervation - Sternocleidomastoid, Sternal head
Accessory nerve NXI and cervical spinal nerves (c2-c3) of cervical plexus
innervation - Auricularis
Facial nerve NVII
innervation - Buccinator
Facial nerve NVII
innervation - Corrugator supercilii
Facial nerve NVII
innervation - Depressor anguli oris
Facial nerve NVII
innervation - Levator anguli oris
Facial nerve NVII
innervation - Levator labii superioris
Facial nerve NVII
innervation - Mentalis
Facial nerve NVII
innervation - Occipitofrontalis, Frontal belly
Facial nerve NVII
innervation - Orbicularis oculi
Facial nerve NVII
innervation - Orbicularis oris
Facial nerve NVII
innervation - Risorius
Facial nerve NVII
innervation - Zygomaticus major
Facial nerve NVII
innervation - Zygomaticus minor
Facial nerve NVII
innervation Occipitofrontalis, Occipital belly
Facial nerve NVII
innervation - Depressor labii inferioris
Facial nerve NVIII
innervation - Masseter
Trigeminal nerve NV, mandibular branch
innervation - Temporalis
Trigeminal nerve NV, mandibular branch
origin - Temporalis
along temporal lines of skull
origin - Buccinator
alveolar processes of maxilla and mandible opposite the molar teeth
insertion - Risorius
angle of mouth
origin - Depressor anguli oris
anterolateral surface of mandibular body
origin - Massseter
aponeurosis and bones of the zygomatic arch
origin - Sternocleidomastoid, Sternal head
attaches to manubrium
origin - Sternocleidomastoid, Clavicular head
attaches to sternal end of clavicle
insertion - Buccinator
blends into fibers of orbicularis oris
origin - Levator anguli oris
canine fossa of the maxilla inferior to the infraorbital foramen
action - Orbicularis oculi
closes eye
action - Buccinator
compresses cheeks
action - Orbicularis oris
compresses, purses lips
insertion - Temporalis
coronoid process of mandible and the anterior border of the mandibular ramus
action - Depressor anguli oris
depresses and draws the corner of mouth laterally
action - Depressor labii inferioris
depresses and helps evert lower lip
action - Risorius
draws corner of mouth laterally
action - Levator labii superioris
elevates and everts upper lip
action - Zygomaticus major
elevates corner of mouth and draws it laterally
action - Masseter
elevates mandible and closes jaws; assists in protracting and retracting mandible and moving mandible from side to side
action - Temporalis
elevates mandible and closes jaws; assists in retracting and moving mandible from side to side
action - Zygomatics minor
elevates upper lip
action - Mentalis
elevates, everts, and protrudes lower lip
insertion - Occipitofrontalis, Occipital belly
epicranial aponeurosis
origin - Occipitofrontalis, Frontal belly
epicranial aponeurosis
insertion - Auricularis
epicranial neurosis
insertion - Corrugator supercilii
eyebrow
origin - Auricularis
fascia around external ear
origin - Risorius
fascia surrounding parotid salivary gland
insertion - Zygomaticus major
fibers of levator anguli oris, orbicularis oris, and other muscles at angle of mouth
origin - Mentalis
incisive fossa of mandible
insertion - Masseter
lateral surface and angle of mandibular ramus
insertion - Orbicularis oris
lips
origin - Depressor labii inferioris
mandible between the anterior midline and the mental foramen
insertion - Sternocleidomastoid
mastoid region of skull and lateral portion of superior nuchal line
origin - Orbicularis oris
maxilla and mandible
origin - Levator labii superioris
maxilla and zygomatic bone, superior to the infraorbital foramen
origin - Corrugator supercilii
medial end of superciliary arch
origin - Orbicularis oculi
medial margin of orbit
insertion - Levator labii superioris
orbicularis oris
action - Corrugator supercilii
pulls skin inferiorly and medially; wrinkles brow
action - Levator anguli oris
raises corner of mouth
action - Occipitofrontalis, Frontal belly
raises eyebrows, wrinkles forehead
insertion - Orbicularis oculi
skin around eyelids
insertion - Levator anguli oris
skin at and below angle of mouth
insertion - Depressor anguli oris
skin at angle of mouth
insertion - Mentalis
skin of chin
insertion - Occipitofrontalis, Frontal belly
skin of eyebrow and bridge of nose
insertion - Depressor labii inferioris
skin of lower lip
origin - Occipitofrontalis, Occipital belly
superior nuchal line and adjacent region of mastoid portion of the temporal bone
action - Occipitofrontalis, Occipital belly
tenses and retracts scalp
action - Auricularis
tenses scalp, moves auricle of ear
insertion - Zygomaticus minor
upper lip
action - Sternocleidomastoid, Sternal head
works with Clavicular head to flex the neck; bends neck toward shoulder
action - Sternocleidomastoid, Clavicular head
works with the sternal head to flex the neck; turns face to opposite side
origin - Zygomaticus major
zygomatic bone near the zygomaticotemporal suture
origin - Zygomaticus minor
zygomatic bone posterior to the zygomaxillary suture
