face, anterolateral neck muscles

occipitofrontalis action

raise brows, horizontal forehead wrinkles

frontal belly of occipitofrontalis origin

epicranial aponeurosis

frontal belly of occipitofrontalis inertion

tissues of brows, nose bridge

occipital belly of occipitofrontalis origin

superior nuchal line

occipital belly of occipitofrontalis insertion

epicranial aponeurosis

occipitofrontalis innervation

facial nerve CN 7

corrugator supercilii action

vertical forehead wrinkles

corrugator supercilii origin

supercilliary ridges on frontal bone

corrugator supercilii insertion

skin of eyebrow

corrugator supercilii innervation

facial nerve CN 7

orbicularis oculi action

close eye tightly

orbicularis oculi origin

nasal bones, frontal bone, maxilla

orbicularis oculi insertion

skin of orbital region

orbicularis oculi innervation

facial nerve CN 7

zygomaticus major/minor action

elevate angle of mouth for laughing/smiling

zygomaticus major/minor origin

zygomatic bone

zygomaticus major/minor insertion

skin of angle of mouth

zygomaticus major/minor innervation

facial nerve CN 7

orbicularis oris action

close mouth, compress/protrude lips - kissy face

orbicularis oris origin

medial maxilla, mandible

orbicularis oris insertion

skin and mucus membrane of lips

orbicularis oris innervation

facial nerve CN 7

buccinator action

compress cheek against molars for blowing, whistling, drinking with straw

buccinator origin

alveolar process of maxilla, buccinator crest of mandible

buccinator insertion

skin of side of mouth, modiolus

buccinator innervation

facial nerve CN 7

depressor anguli oris action

draw ends of mouth down, frown

depressor anguli oris origin

mandible, mental tubercle

depressor anguli oris insertion

skin of angle of mouth, modiolus

depressor anguli oris innervation

facial nerve CN 7

masseter action

elevate mandible

masseter origin

zygomatic arch

masseter insertion

ramus and angle of mandible

masseter innervation

V₃: mandibular branch of trigeminal nerve

temporalis action

elevate and retract mandible

temporalis origin

temporal bone, temporal lines of parietal bone

temporalis insertion

coronoid process of mandible

temporalis innervation

V₃: mandibular branch of trigeminal nerve

lateral pterygoids action with bilateral contraction

protrusion and depression of mandible

lateral pterygoids action with unilateral contraction

contralateral deviation

lateral pterygoids origin

greater wing and lateral pterygoid plate of sphenoid

lateral pterygoids insertion

TMJ joint capsule/disc, neck of condyloid process

lateral pterygoids innervation

V₃: mandibular branch of trigeminal nerve

medial pterygoids action with bilateral contraction

portrusion and elevation of mandible

medial pterygoids action with unilateral contraction

contralateral deviation

medial pterygoids origin

maxilla and lateral pterygoid plate

medial pterygoids insertion

medial mandible

medial pterygoids innervation

V₃: mandibular branch of trigeminal nerve

platysma action

draw mouth inferiorly, draw neck superiorly when clenching teeth

platysma superior attachment

inferior border of mandible

platysma anterior attachment

fascia of pectoralis major and deltoid

platysma innervation

facial nerve CN 7

sternocleidomastoid action with bilateral contraction

flex head

sternocleidomastoid action with unilateral contraction

contralateral rotation, ipsilateral sidebend

sternocleidomastoid origin

medial clavicle (head) and sternum (head)

sternocleidomastoid insertion

mastoid process of temporal bone

sternocleidomastoid innervation

spinal accessory nerve CN 11

anterior scalene action

flex neck

anterior scalene origin

rib 1

anterior scalene insertion

C3-C6 vertebrae

anterior scalene innervation

C4-C6 nerves

middle scalene action

neck sidebend

middle scalene origin

rib 1

middle scalene insertion

C5-C7 vertebrae

middle scalene innervation

C3-C8 nerves

posterior scalene action

neck sidebend

posterior scalene origin

rib 2

posterior scalene insertion

C5-C7 vertebrae

posterior scalene innervation

C7-C8 nerves

digastric action

depress mandible, elevate hyoid

digastric origin

2 bellies - mandible, temporal bone

digastric insertion

intermediate tendon of hyoid

digastric innervation

facial and inferior alveolar nerves (trigeminal)

stylohyoid action

elevate and steady hyoid

stylohyoid origin

styloid process of temporal bone

stylohyoid insertion

body of hyoid

stylohyoid innervation

facial nerve CN 7

mylohyoid action

elevate hyoid, move tongue for speech and swallowing

mylohyoid origin

mylohyoid line of mandible

mylohyoid insertion

hyoid

mylohyoid innervation

trigeminal nerve CN 5

sternohyoid action

depress hyoid after swallowing

sternohyoid origin

manubrium, medial end of clavicle

sternohyoid insertion

body of hyoid

omohyoid action

stabilize and depress hyoid

omohyoid origin

superior scapular border

omohyoid insertion

inferior border of hyoid

sternothyroid action

depress hyoid and larynx

sternothyroid origin

posterior manubrium

sternothyroid insertion

thyroid cartilage

thyrohyoid action

elevate larynx

thyrohyoid origin

thyroid cartilage

thyrohyoid insertion

inferior hyoid