cranial nerve anatomy Flashcards
where does trigeminal nerve connect to CNS
pons
what bone in skull does trigeminnal nerve course
sphenoid bone
facial nerve connection to CNS
pontomedullary junction
what skull bone does facial nerve course
temporal bone
- inferior acoustic meatus
- stylomastoid foramen
what is branch of facial nerve called
chorda tympani
what does chorda tympani supply
sensation of taste for 2/3rd tongue
what does facial nerve connect with
lingual nerve (branch of CN V3)
muscles of facial expression are innervated by
CN VII
where does glossopharyngeal connect to CNS
superior medulla oblongata
where does glossopharyngeal meet skull bones
junction between temporal bone and occipital bone
what part of tongue does glossopharyngeal supply
anterior 1/3rd tongue
what supplies the palatine tonsils
glossopharyngeal
where does vagus nerve connect to CNS
= lateral medulla
- oblongata
testing facial muscles - CN VII
ask patient to frown, smile, close eyes
testing vagus nerve
- patient to say ‘ah’
- ask patient to swallow
- listen to their speech (hoarseness)
- ask patient to cough
function of spinal accessory nerve
- turning of head (sternoclamastoid)
- shrugging of shoulders
function of hypoglossal
protrusion of tongue
- if pathology it will point towards side of injured nerve e.g. if tongue goes right its a right sided pathology
How many branches does the facial nerve have
5
name the 5 branches of the facial nerve
- cervical branch
- marginal mandibular branch
- buccal branch
- zygomatic branch
- temporal branch
what nerve innervates the muscles of mastication
mandibular nerve of CNV (V3 branch)
what nerve can blow out fractures damage
branches of maxillary nerve CN V2
what muscle does glossopharyngeal innervate
stylopharyngeus
what part of tongue does glossopharyngeal sensory innervation from
posterior third of tongue
where does glossopharyngeal exit the skull
via jugular foramen
