1. ♯ Nerve Motor Sensory Test Origin Passage
I Olfactory None Smell
Sniff two different scents with
alternatingnostrils
Embryonic: Nasal placode.
Anatomical:Olfactory Mucosa in
anteriosuperior nasal cavity CribiformPlate
II Optic None
Sight: Axons from
retinal layers converge
on optic disc and form
nerve.
Visual acuity:distanceletter
(Snellen) chart
Visual fields:white pin wheel
Optic Nerve: red pin
Embryonic: retinal ganglion cell.
Anatomical:Occipital lobe
Optic foramen, body of
sphenoid
III Oculomotor
Pupil constriction,
opening eyelid None
Pupillary reflex:pen lightto each
eye
Cotton wool corneal reflex
Embryonic: basal plateof midbrain
Anatomical:midbrain Superior Orbital fissure
IV Trochlear
Innervates Superior
obliqueextraocular
muscle None
Followingpen lightwith eyes – H
and out and in
Far window to near pen light
Embryonic: basal plateof midbrain
Anatomical:caudal mesencephalon Superior Orbital fissure
V Trigeminal Bitingand chewing
Head and face, mucous
membranes of mouth,
nose, & paranasal
sinuses
Pokingface with cotton
Pokingface blunt & sharp
Bitingdown & feeling
Jaw jerk reflex
Embryonic: sensory from cranial
neural crest; motor from basal plate
of Pons
Anatomical:Pons
V1: Superior Orbital
fissure
V2: Round foramen
V3: Foramen ovale
VI Abducens
Lateral rectus extraocular
muscle None
Followingpen lightwith eyes – H
and out and in
Cover eyes alternating
Embryonic: basal plateof pons
Anatomical:Pons & Medulla Superior Orbital fissure
VII Facial Facial expression Taste
Show teeth, purse lips,blow
cheeks, raiseeyebrows, squint.
Same with resistance.
Embryonic: hyoid arch,basal plate
of pons, cranial neural crest.
Anatomical:Pons Internal auditory canal
VIII Vestibulocochlear Balance Hearing
Rustle fingers
Tuning fork
Marchingon spot
Walking –turning, heels, toes
Embryonic: basal plateof medulla,
cranial neural crest
Anatomical:Medulla Internal auditory canal
IX Glossopharyngeal Swallowing Taste Say “Ah”, cough, swallow
Embryonic: basal plateof medulla,
cranial neural crest
Anatomical:Medulla Jugular foramen
X Vagus
Speech, heart rate,
peristalsis,sweating Internal organs If they have been talking Anatomical:Medulla
Through diaphragm@
T10
Jugular foramen
XI Accessory Shrugging & rotation None Shrug, turn head, resistance
Embryonic: basal plateof C1-6
Anatomical:Upper spinal cord Jugular foramen
XII Hypoglossal Muscles of tongue None
Tongue to sideof mouth,
resistance
Embryonic: basal plateof medulla
Anatomical:ventromedial medulla Hypoglossal canal