Anatomy Flashcards

1
Q

nerve supplying motor innervation to muscles of facial expression

A

facial nerve

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2
Q

function of buccinator

A
facial expression
keep cheek taut 
infection spread
modiolus
posterior attachment - pterygomandibular raphe important landmark for IDB
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3
Q

what duct passes through buccinator?

A

parotid

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4
Q

what nerve is affected in Ramsay hunt syndrome?

A

facial nerve

after shingles (herpes zoster) outbreak

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5
Q

foramen facial nerve emerges from

A

stylomastoid fo.

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6
Q

motor branches facial nerve divides into in parotid

A
tempora
zygomatic
buccal
marginal mandibular
cervical
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7
Q

what sort of palsy does lower motor neurone lesion cause

A

ipsilateral

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8
Q

what sort of palsy does upper motor neurone lesions cause

A

contralateral with forehead spared

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9
Q

3 structures travelling through parotid

A

ECA
retromandibular vein
facial nerve

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10
Q

what supplies sensory innervation to the face?

A

trigeminal nerve + cervical plexus

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11
Q

sensory innervation around ear? branch of v3

A

auriculotemporal

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12
Q

sensory innervation to angle of jaw

A

c2 + c3 branches of cervical plexus

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13
Q

v3 foramen

A

foramen ovale

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14
Q

what is a chorda tympani a branch of?

A

facial nerve - taste fibres, hijacks lingual

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15
Q

what supplies sensory innervation to the face?

A

trigeminal nerve + cervical plexus

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16
Q

innervation to maxillary teeth and gingiva?

A

v2 - anterior, middle + posterior superior alveolar nerve

17
Q

sensory innervation to angle of jaw

A

c2 + c3 branches of cervical plexus

18
Q

v3 foramen

A

foramen ovale

19
Q

what is a chorda tympani a branch of?

A

facial nerve - taste fibres, hijacks lingual

20
Q

innervation to palate of maxilla?

A

nasopalatine + greater palatine

21
Q

innervation to maxillary teeth and gingiva?

A

anterior, middle + posterior superior alveolar nerve

22
Q

innervation to mandibular teeth?

A

IAN (+incisive) - v3

23
Q

innervation of mandibular gingiva?

A

lingual - lingual nerve

buccal - long buccal + mental

24
Q

what does anterior branch of v3 innervate?

A

mainly motor to MOM

long buccal sensory

25
what does posterior branch of v3 innervate?
mainly sensory, auriculotemporal, IAN, lingual | motor to mylohyoid
26
how is taste of ant 2/3 tongue transmitted
facial nerve via chorda tympani (along lingual)
27
if lesion in trigeminal which side does jaw deviate too?
deviation to damaged side (as week + atrophic)
28
parasympathetic nerve innervation to parotid
glossopharyngeal IX
29
how would infection spread into cranium?
venous spread into cavernous sinus paranasal sinuses through communication with maxillary teeth direct via tissue spaces can involve cavernous sinus thrombosis or brain abscess
30
sensory innervation to tongue
ant 2/3 lingual + chorda tympani | post 1/3 glossopharyngeal IX
31
3 ways infection spreads
tissue planes venous routes lymphatic system
32
where do submandibular nodes drain to?
jugolu-digastric
33
where does submental nodes drain too?
jugulo-omohyoid
34
sensory innervation to soft palate
lesser palatine nerve (V2)
35
motor innervation to soft palate
vagus X - pharyngeal plexus