Anatomy Flashcards
nerve supplying motor innervation to muscles of facial expression
facial nerve
function of buccinator
facial expression keep cheek taut infection spread modiolus posterior attachment - pterygomandibular raphe important landmark for IDB
what duct passes through buccinator?
parotid
what nerve is affected in Ramsay hunt syndrome?
facial nerve
after shingles (herpes zoster) outbreak
foramen facial nerve emerges from
stylomastoid fo.
motor branches facial nerve divides into in parotid
tempora zygomatic buccal marginal mandibular cervical
what sort of palsy does lower motor neurone lesion cause
ipsilateral
what sort of palsy does upper motor neurone lesions cause
contralateral with forehead spared
3 structures travelling through parotid
ECA
retromandibular vein
facial nerve
what supplies sensory innervation to the face?
trigeminal nerve + cervical plexus
sensory innervation around ear? branch of v3
auriculotemporal
sensory innervation to angle of jaw
c2 + c3 branches of cervical plexus
v3 foramen
foramen ovale
what is a chorda tympani a branch of?
facial nerve - taste fibres, hijacks lingual
what supplies sensory innervation to the face?
trigeminal nerve + cervical plexus
innervation to maxillary teeth and gingiva?
v2 - anterior, middle + posterior superior alveolar nerve
sensory innervation to angle of jaw
c2 + c3 branches of cervical plexus
v3 foramen
foramen ovale
what is a chorda tympani a branch of?
facial nerve - taste fibres, hijacks lingual
innervation to palate of maxilla?
nasopalatine + greater palatine
innervation to maxillary teeth and gingiva?
anterior, middle + posterior superior alveolar nerve
innervation to mandibular teeth?
IAN (+incisive) - v3
innervation of mandibular gingiva?
lingual - lingual nerve
buccal - long buccal + mental
what does anterior branch of v3 innervate?
mainly motor to MOM
long buccal sensory
what does posterior branch of v3 innervate?
mainly sensory, auriculotemporal, IAN, lingual
motor to mylohyoid
how is taste of ant 2/3 tongue transmitted
facial nerve via chorda tympani (along lingual)
if lesion in trigeminal which side does jaw deviate too?
deviation to damaged side (as week + atrophic)
parasympathetic nerve innervation to parotid
glossopharyngeal IX
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
sensory innervation to tongue
ant 2/3 lingual + chorda tympani
post 1/3 glossopharyngeal IX
3 ways infection spreads
tissue planes
venous routes
lymphatic system
where do submandibular nodes drain to?
jugolu-digastric
where does submental nodes drain too?
jugulo-omohyoid
sensory innervation to soft palate
lesser palatine nerve (V2)
motor innervation to soft palate
vagus X - pharyngeal plexus
