Cranial Nerves Flashcards
What is the foremen for CN1
Cribiform plate
What is the name and function of CN1
Olfactory nerve - sense of smell
How do you test CN1
Ask patient about their sense of smell
Use different outdoors e.g mint to test smell
What is the foramen for CN2
Optic foramen
What is the name and function of CN2
Optic nerve
Responsible for sight
How would you test CN2
Snellen wall chart (visual acuity)
Visual fields test
Pupillary reflexes
What is the foramen for CN3
Super orbital tissue
What is the name and function of CN3
Oculomotor nerve
Supplies all extraocular muscles except superior oblique and lateral recurs
Parasympathetic pupillary reflex
Elevation of upper eyelid
How would you test CN3
H test
Light pupillary reflex
What is the foramen or fissure for CN4
Superior orbital fissure
What is the name and function of CN4
Trochlea nerve
Innervates the superior oblique (looking down)
How would you test CN4
The H test
what is the foramen or fissure for CN5
Superior orbital fissure, foramen rotundum, foramen ovale
what is the name and function of CN5
Trigeminal nerve
opthalamic - sensory to scalp, forehead, nose and upper eyelid
maxilary - sensory to palate, upper jaw, upper teeth, lower eyelid and nasal cavity
mandibular -sensory to lower lip, lower teeth anterior third of tongue, lateral cheek, temporal region - motor to muscles of mastication, digastic, mylohyoid and middle ear
how would you test CN5
sharp and soft sensory test, mastication test - jaw reflex
what is the Foramen for C6
superior orbital fissure
what is the name and function of CN6
Abducens nerve
innervates the lateral rectus
what is the test for CN6
H test
what is the foramen or fissure for CN7
Internal auditory meatus and stylomastoid foramen
what is the name and function of CN7
Facial nerve
Sensory - taste for anterior 2/3 of the tongue, and part of the ear
motor to muscles of facial expression
parasympathetic innervation of salivary glands
what is the foramen or fissure of CN8
Internal auditory meatus
What is the name and function of CN8
vestibulocochlear nerve
sense of hearing
sense of balance
how to test CN8
ask patient about hearing
webers test
rinne’s test
what is the foramen or fissure of CN9 and 10
Jugular foramen
what are the names and functions of CN9 and 10
glossopharyngeal and vagus nerve
sensory back third of the tongue
motor to pharyngal and laryngeal muscles
parasympathetic to parotid salivary gland and thoracic abdominal viscera
how do you test CN9 and CN10
ask patient to cough
listen for a hoarse voice
swallowing test, test for uvula deviation
loss of gag reflex and blood pressure
what is the foramen or fissure for CN11
Foramen magnum and jugular foramen
what is the name and function of CN11
Accessory nerve
Motor to Pharynx, trapezius and SCM
How do you test for CN11
Scm and trapezius test
what is the foramen or fissure for CN12
hypoglossal canal
what is the name and function of CN12
Hypoglossal nerve
Motor to tongue and throat
what is the test for CN12
tongue movement and protrusion test
Acronym to remember Motor or sensory
tbd
acronym to remember cranial nerves
Oh Oh Oh to touch and feel a girls vagina ah heaven
