Anatomy

Question 1

nerve supplying motor innervation to muscles of facial expression

Answer 1

facial nerve

Question 2

function of buccinator

Answer 2

facial expression
keep cheek taut 
infection spread
modiolus
posterior attachment - pterygomandibular raphe important landmark for IDB

Question 3

what duct passes through buccinator?

Answer 3

parotid

Question 4

what nerve is affected in Ramsay hunt syndrome?

Answer 4

facial nerve

after shingles (herpes zoster) outbreak

Question 5

foramen facial nerve emerges from

Answer 5

stylomastoid fo.

Question 6

motor branches facial nerve divides into in parotid

Answer 6

tempora
zygomatic
buccal
marginal mandibular
cervical

Question 7

what sort of palsy does lower motor neurone lesion cause

Answer 7

ipsilateral

Question 8

what sort of palsy does upper motor neurone lesions cause

Answer 8

contralateral with forehead spared

Question 9

3 structures travelling through parotid

Answer 9

ECA
retromandibular vein
facial nerve

Question 10

what supplies sensory innervation to the face?

Answer 10

trigeminal nerve + cervical plexus

Question 11

sensory innervation around ear? branch of v3

Answer 11

auriculotemporal

Question 12

sensory innervation to angle of jaw

Answer 12

c2 + c3 branches of cervical plexus

Question 13

v3 foramen

Answer 13

foramen ovale

Question 14

what is a chorda tympani a branch of?

Answer 14

facial nerve - taste fibres, hijacks lingual

Question 15

what supplies sensory innervation to the face?

Answer 15

trigeminal nerve + cervical plexus

Question 16

innervation to maxillary teeth and gingiva?

Answer 16

v2 - anterior, middle + posterior superior alveolar nerve

Question 17

sensory innervation to angle of jaw

Answer 17

c2 + c3 branches of cervical plexus

Question 18

v3 foramen

Answer 18

foramen ovale

Question 19

what is a chorda tympani a branch of?

Answer 19

facial nerve - taste fibres, hijacks lingual

Question 20

innervation to palate of maxilla?

Answer 20

nasopalatine + greater palatine

Question 21

innervation to maxillary teeth and gingiva?

Answer 21

anterior, middle + posterior superior alveolar nerve

Question 22

innervation to mandibular teeth?

Answer 22

IAN (+incisive) - v3

Question 23

innervation of mandibular gingiva?

Answer 23

lingual - lingual nerve

buccal - long buccal + mental

Question 24

what does anterior branch of v3 innervate?

Answer 24

mainly motor to MOM

long buccal sensory

Question 25

what does posterior branch of v3 innervate?

Answer 25

mainly sensory, auriculotemporal, IAN, lingual

motor to mylohyoid

Question 26

how is taste of ant 2/3 tongue transmitted

Answer 26

facial nerve via chorda tympani (along lingual)

Question 27

if lesion in trigeminal which side does jaw deviate too?

Answer 27

deviation to damaged side (as week + atrophic)

Question 28

parasympathetic nerve innervation to parotid

Answer 28

glossopharyngeal IX

Question 29

how would infection spread into cranium?

Answer 29

venous spread into cavernous sinus
paranasal sinuses through communication with maxillary teeth
direct via tissue spaces

can involve cavernous sinus thrombosis or brain abscess

Question 30

sensory innervation to tongue

Answer 30

ant 2/3 lingual + chorda tympani

post 1/3 glossopharyngeal IX

Question 31

3 ways infection spreads

Answer 31

tissue planes
venous routes
lymphatic system

Question 32

where do submandibular nodes drain to?

Answer 32

jugolu-digastric

Question 33

where does submental nodes drain too?

Answer 33

jugulo-omohyoid

Question 34

sensory innervation to soft palate

Answer 34

lesser palatine nerve (V2)

Question 35

motor innervation to soft palate

Answer 35

vagus X - pharyngeal plexus