Head and Neck muscles

obicularis oculi origin

frontal bone, maxilla, medial palpebral ligament, lacrimal bone

obicularis oculi insertion

skin of orbital region, lateral palpebral raphe, superior and inferior tarsal plates

obicularis oculi innervation

facial nerve

obicularis oculi blood supply

maxillary, superficial temporal, facila, and ophthalmic arteries

obicularis oculi function

closes eye

occipitofrontalis origin

frontalis: skin of eyebrow, muscles of forehead, occipitalis: lateral 2/3 of superior nuchal line

occipital frontalis insertion

epicranial aponeurosis

occipitofrontalis innervation

frontalis: facial nerve, occipitalis: posterior auricular nerve

occipitofrontalis blood supply

superfiical temporal, ophthalmic, posterior auricular, occipital arteries

occipitofrontalis function

frontalis: elevates eyebrows, wrinkles skin of forehead. occipitalis: retracts scalp

masseter origin

superficial part: zygomatic bone, zygomatic arch, deep part: zygomatic arch

massseter insertion

lateral surface of ramus and angle of mandible

masseter innervation

masseteric nerve

masseter blood supply

masseteric artery

masseter function

elevates and protrudes mandible

sternocleidomastoid origin

sternal head manubrium sterni, clavicular head: medial third of clavicle

sternocleidomastoid insertion

mastoid process of the temporal bone, superior nuchal line of occipital bone

sternocleidomastoid innervation

accessoyr nerve, cervical plexus

sternocleidomastoid blood supply

superior thyroid artery

sternocleidomastoid function

unilateral contraction of cervical pine, bilateral contraction, elevation of clavicle and manubrium of sternum

obicularis oris origin

maxilla and mandible, perioral skin and muscles, modiolus

obicularis oris insertion

skin and mucuous membrane of lips

obicularis oris innervation

buccal branch of facial nerve

obicularis oris blood supply

labial arteries, mental and infraorbital arteries, facial artery

obicularis oris function

closes mouth, compresses and protrudes lips

zygomaticus major origin

lateral aspect of zygomatic bone

zygomaticus major insertion

the skin at the angle of the mouth/mouth corner

zygomaticus major innervation

buccal and zygomatic branches of facial nerve

zygomaticus major blood supply

superior labial artery

zygomaticus major function

elevates and everts angle of mouth

buccinator origin

alveolar process of maxilla, alveolar part of mandible, pterygomandibular raphe, buccinator crest of mandible

buccinator insertion

modiolus, fibers of obicularis oris

buccinator innervation

buccal branch of facial nerve

buccinator blood supply

buccal artery, facial artery

buccinator function

compresses cheek against molar teeth

obicularis oculi

occipitofrontalis

masseter

sternocleidomastoid

obicularis oris

zygomaticus major

buccinator