cranial nerves (last 6) Flashcards
what is the seventh cranial nerve
facial nerve
where does the facial nerve start, pass through and end
PONS, internal acoustic meatus, stylomastoid foramen to lateral aspect of face
what type of fibres does the facial nerve have
motor - facial expressions
sensory - taste
what are the clinical assessment considerations
test facial expressions, clench eyes, smile frown…
look for one side deficiency
where does the vestibulocochlear nerve start, pass through and end
internal acoustic meatus, enters brain stem at PONS
what type of nerve fibres does the vestibulocochlear nerve have
sensory - balance/equilibrium and hearing
what are the two divisions f the vestibulocochlear nerve
vestibular nerve
cochlear nerve
what are the assessment considerations for the vestibulocochlear nerve
close eyes when standing still to check equilibrium
block one ear and whisper in the other to check hearing
where does the glossopharyngeal nerve start, pass through and end
medulla, leave skull via the jugular foramen to the throat
what type of fibres does the glossopharyngeal nerve have
motor - innervates tongue
sensory - taste/ pharynx
what are the assessment considerations for the glossopharyngeal nerve
gag reflex
where does the vagus nerve start
medulla
what does the vagus nerve innervate
all viscera in the body
what is special about the vagus nerve
its the only cranial nerve that extends beyond the head and neck
what type of fibres does the vagus nerve have
motor - parasympathetic visceral organs
sensory - taste
where does the cranial root of the accessory nerve start and pass through
medulla and passes through the jugular foramen
where does the spinal root of the accessory nerve start and pass through
upper spinal cord (c1-c5) and passes through the foramen magnum
where does the accessory nerve innervate
sternocleidomastoid and trapezius muscle
what type of fibres does the accessory nerve have
motor - moves head and neck
what are the assessment considerations of the accessory nerve
move head and shrug shoulders
where does the hypoglossal nerve start and end
medulla and exits the skull via the hypoglossal canal
what type of fibres does the hypoglossal nerve have
extrinsic and intrinsic muscles of the tongue
what are the assessment considerations of the hypoglossal nerve
if they can speak clearly, swallow and move tongue
Exit foramen of facial nerve
Auditory canal
Exit foramen of vestibulocochlear
Auditory canal
Exit foramen of glossopharyngeal nerve
Jugular foramen
Exit foramen of vagus nerve
Jugular foramen
Exit foramen of accessory nerve
Jugular foramen
Exit Foramen of hypoglossal nerve
Hypoglossal foramen
