Muscles of facial expression

Question 1

muscles of the orbital group (2)

Answer 1

orbicularis oculi

corrugator supercilii

Question 2

muscles of the nasal group (3)

Answer 2

nasalis
procerus
depressor septi

Question 3

examples of muscles of oral group (6)

Answer 3

depressor anguli oris 
zygomatic major 
levator labii superioris 
levator labii superioris alaeque nasi 
orbicularis oris 
buccinator

Question 4

other muscles shown on prosection

Answer 4

occipitofrontalis

platysma

Question 5

neck mucles shown

Answer 5

posterior belly of digastric

stylohyoid

Question 6

role of transverse nasalis

Answer 6

compresses nasal aperture

Question 7

role of alar nasalis

Answer 7

draws cartilage downwards and laterally

opening nostrils

Question 8

role of procerus

Answer 8

draws down medial eyebrows

producing transverse wrinkles over nose bridge

Question 9

role of depressor septi

Answer 9

pulls nose inferiorly

Question 10

role of depressor anguli oris

Answer 10

draws down and lateral corners of mouth

Question 11

role of depressor labii inferioris

Answer 11

draws lower lip downwards and lateral

Question 12

role of mentalis

Answer 12

raises and protrudes the lips

Question 13

role of risorius

Answer 13

retracts corner of mouth

Question 14

role of zygomatic major

Answer 14

draws corner of mouth up and lateral

Question 15

role of zygomatic minor

Answer 15

draws upper lip upwards

Question 16

role of levator labii superioris

Answer 16

raises upper lip and helps form nasolabial furrow

Question 17

role of levator labii superioris alaeque nasi

Answer 17

raises upper lip and open nostrils

Question 18

role of levator anguli oris

Answer 18

raises corner of mouth

Question 19

role of orbicularis oris

Answer 19

closes lips; protrudes lips

Question 20

role of buccinator

Answer 20

presses the cheek against teeth

Question 21

role of palprebral orbicularis oculi

Answer 21

gentle eyelid closure

Question 22

role of orbital orbicularis oculi

Answer 22

forceful eyelid closure

Question 23

branches of the facial nerve

Answer 23

temporal 
zygomatic 
buccal 
marginal mandibular 
cervical

Question 24

temporal branch innervates

Answer 24

frontalis
orbicularis oculi
corrugator supercilii

Question 25

zygomatic branches innervate

Answer 25

orbicularis oculi

Question 26

buccal branches innervate

Answer 26

orbicularis oris buccinator zygomatics

Question 27

marginal mandibular branches innervate

Answer 27

mentalis

Question 28

cervical branch innervates

Answer 28

platysma

Question 29

where does the facial nerve exit the skull

Answer 29

stylomastoid foramen