MOINA of the Face

• origin of orbicularis oculi

  orbital portion: nasal process of frontal bone

  palpebral portion: palpebral ligament

  lacrimal portion: lacrimal crest of lacrimal bone
• insertion of orbicularis oculi

  circumferentially around orbit meeting at the origin
• innervation of orbicularis oculi

  zygomatic branch of facial nerve (CN VII)
• action of orbicularis oculi

  closes eye tightly, squinting of the eye

  depresses upper eyelid, elevates lower eyelid (palpebral part)
• origin of occipitalis

  lateral 2/3 of superior nuchal line & EOP (external occipital protuberance)
• insertion of occipitalis

  galea aponeurotica
• innervation of occipitalis

  posterior auricular branch of facial nerve (CN VII)
• action of occipitalis

  draws back scalp to raise eyebrows & wrinkle brow (surprise)
• origin of frontalis

  galea aponeurotica
• insertion of frontalis


  skin & fascia above nose & eyes
• innervation of frontalis

  temporal branch of facial nerve (CN VII)
• action of frontalis

  draws scalp posteriorly to raise eyebrows & wrinkle brow (surprise)
• origin of orbicularis oris

  modiolus (just lateral to angle of mouth)
• insertion of orbicularis oris

  circumferentially around mouth blends with other muscles
• innervation of orbicularis oris

  facial nerve (CN VII)
• action of orbicularis oris

  closes mouth; protrudes lips (puckering of lips)
• origin of levator anguli oris

  below infraorbital foramen of maxilla
• insertion of levator anguli oris

  modiolus (near angle of mouth)
• innervation of levator anguli oris

  facial nerve (CN VII)
• action of levator anguli oris

  elevates angle(s) of mouth (smiling)
• origin of buccinator

  maxilla & mandible (posterior alveolar process of both bones)

  pterygomandibular raphe
• insertion of buccinator

  modiolus (just lateral to the angle of the mouth)
• innervation of buccinator

  facial nerve (CN VII)
• action of buccinator

  compresses cheek(s)
• origin of levator palpebrae superioris

  lesser wing of sphenoid bone (anterior surface)
• insertion of levator palpebrae superioris

  upper eyelid (fascia & skin)
• innervation of levator palpebrae superioris

  oculomotor nerve (CN III)
• action of levator palpebrae superioris

  elevates upper eyelid
• origin of procerus


  nasal bone & cartilages
• insertion of procerus

  skin & fascia between eyebrows
• innervation of procerus

  superior buccal branches of facial nerve (CN VII)
• action of procerus

  draws medial eyebrow downward (menacing expression)

  wrinkles skin of superior nose
• origin of corrugator supercilii

  frontal bone just above nose (lateral to glabella)
• insertion of corrugator supercilii

  skin of medial portion of eyebrows
• innervation of corrugator supercilii

  zygomatic branch of facial nerve (CN VII)
• action of corrugator supercilii

  draws eyebrows downward & medially ("thinker's brow")
• origin of depressor anguli oris

  along oblique line of mandible

  lateral aspect of mental tubercle of mandible
• insertion of depressor anguli oris

  modiolus (near angle of mouth)
• innervation of depressor anguli oris

  facial nerve (CN VII)
• action of depressor anguli oris

  depresses angle(s) of mouth (frown)