L14: Face

Question 1

muscles of facial expression

Answer 1

platysma
Occipitofrontalis
orbicularis oculi
procerus
nasalis
orbicularis  oris
levator labii superioris
zygomaticus minor
zygomaticus major
Risorius

Question 2

muscles of mouth and lips

Answer 2

depressor anguli oris

depressor labii inferioris

Question 3

platysma

Answer 3

o – subQ of infraclavicular and supraclavicular areas

I – base of mandible, cheek, lower lip

A – depress mandible
tense skin of inf face/neck

Question 4

Occipitofrontalis

Answer 4

O – ant: epicranial aponeurosis
post: sup nuchal line

I – eyebrows and forehead

A – elevate eyebrows
protract scalp

Question 5

orbicularis oculi

Answer 5

O – orbital margin, lacrimal bone

I – skin around orbit

A – close eyelids

Question 6

procerus

Answer 6

O – facial aponeurosis, lat nasal cartilage

I – skin btwn eyebrows

A – depress med eyebrows
wrinkle skin over dorsal nose

Question 7

nasalis

Answer 7

O – front maxillae

I – alar cartilage

A – depress alae laterally
dilate nose holes

Question 8

orbicular oris

Answer 8

O – med maxilla n mandible
deep skin about mouth

I – mucosa of lips

A – closes mouth
compress/protrude lips

Question 9

levator labii superioris

Answer 9

O – infraorbital margin

I – skin of upper lip

A – dilate mouth

Question 10

zygomaticus minor

Answer 10

O – ant zygomatic bone

I – upper lip

A – dilate mouth

Question 11

zygomaticus major

Answer 11

O – lat zygomatic bone

I – angle of mouth

A – elevate corner of mouth

Question 12

risorius

Answer 12

O – parotid fascia, cheek skin

I – angle of mouth

A – depress corner of mouth

Question 13

depressor anguli oris

Answer 13

O – anterolateral base of mandible

I – angle of mouth

A – depress corner of mouth

Question 14

depressor labii inferioris

Answer 14

O – platysma
anterolateral mandible

I – skin lower lip

A – mouth dilator
depress and evert lower lip

Question 15

facial artery - trace

Answer 15

branch of ext carotid artery

winds around lower mandible and becomes superficial

passes lateral to angle of mouth

Question 16

branches of facial artery

Answer 16

sup/inf labial arteries
lat nasal artery
angular artery

Question 17

superficial temporal artery

Answer 17

terminal branch of ext carotid art

emerges btwn TMF and auricle

enters temporal fossa

Question 18

superficial temporal artery division

Answer 18

divides into

frontal and parietal branches

Question 19

transverse facial artery

Answer 19

arises from superficial temporal art

crosses face superficial to masseter muscle

anastomoses w/ facial art

Question 20

branches of transverse facial artery

Answer 20

its branches supply

parotid gland
masseter muscle
skin of face

Question 21

sensory innervation of the face

Answer 21

maxillary n
mandibular n
ophthalmic n

Question 22

nerve supply of the scalp and back of skull

Answer 22

ophthalmic n

greater occipital n

ear/side: lesser occipital n
great auricular n

Question 23

sensory innervation of the face is via ?

Answer 23

CN V = trigeminal nerve

3 branches off it

Question 24

what nerve branches exit thru the superior orbital fissure ?

Answer 24

Ophthalmic branch

Question 25

what nerve branches exit thru the foramen rotundum ?

Answer 25

maxillary branch

Question 26

what nerve branches exit thru the foramen ovale ?

Answer 26

mandibular branch

Question 27

what is the primary motor nerve to muscles of facial expression ?

Answer 27

CN 7 or facial nerve

Question 28

CN VII

Answer 28

the facial nerve
supplies muscles derived from 2nd pharyngeal arch

branches:
temporal
zygomatic
buccal
mandibular
cervical

Question 29

what foramen does CN VII pass thru ?

Answer 29

stylomastoid foramen