L14: Face Flashcards
muscles of facial expression
platysma Occipitofrontalis orbicularis oculi procerus nasalis orbicularis oris levator labii superioris zygomaticus minor zygomaticus major Risorius
muscles of mouth and lips
depressor anguli oris
depressor labii inferioris
platysma
o – subQ of infraclavicular and supraclavicular areas
I – base of mandible, cheek, lower lip
A – depress mandible
tense skin of inf face/neck
Occipitofrontalis
O – ant: epicranial aponeurosis
post: sup nuchal line
I – eyebrows and forehead
A – elevate eyebrows
protract scalp
orbicularis oculi
O – orbital margin, lacrimal bone
I – skin around orbit
A – close eyelids
procerus
O – facial aponeurosis, lat nasal cartilage
I – skin btwn eyebrows
A – depress med eyebrows
wrinkle skin over dorsal nose
nasalis
O – front maxillae
I – alar cartilage
A – depress alae laterally
dilate nose holes
orbicular oris
O – med maxilla n mandible
deep skin about mouth
I – mucosa of lips
A – closes mouth
compress/protrude lips
levator labii superioris
O – infraorbital margin
I – skin of upper lip
A – dilate mouth
zygomaticus minor
O – ant zygomatic bone
I – upper lip
A – dilate mouth
zygomaticus major
O – lat zygomatic bone
I – angle of mouth
A – elevate corner of mouth
risorius
O – parotid fascia, cheek skin
I – angle of mouth
A – depress corner of mouth
depressor anguli oris
O – anterolateral base of mandible
I – angle of mouth
A – depress corner of mouth
depressor labii inferioris
O – platysma
anterolateral mandible
I – skin lower lip
A – mouth dilator
depress and evert lower lip
facial artery - trace
branch of ext carotid artery
winds around lower mandible and becomes superficial
passes lateral to angle of mouth
branches of facial artery
sup/inf labial arteries
lat nasal artery
angular artery
superficial temporal artery
terminal branch of ext carotid art
emerges btwn TMF and auricle
enters temporal fossa
superficial temporal artery division
divides into
frontal and parietal branches
transverse facial artery
arises from superficial temporal art
crosses face superficial to masseter muscle
anastomoses w/ facial art
branches of transverse facial artery
its branches supply
parotid gland
masseter muscle
skin of face
sensory innervation of the face
maxillary n
mandibular n
ophthalmic n
nerve supply of the scalp and back of skull
ophthalmic n
greater occipital n
ear/side: lesser occipital n
great auricular n
sensory innervation of the face is via ?
CN V = trigeminal nerve
3 branches off it
what nerve branches exit thru the superior orbital fissure ?
Ophthalmic branch
