Cranial Nerves Flashcards
How many cranial nerves are there?
12
On Old Olympus’ Towering Tops/A Finn And German Viewed Some Hops
Olfactory
Optic
Oculomotor
Trochlear
Trigeminal
Abducens
Facial
Auditory/Vestibulocochlear
Glossopharyngeal
Vagus
Spinal Accessory
Hypoglossal
I: Olfactory
Smell (sensory)
Nuclei- olfactory bulb
Peripheral- olfactory epithelium
II: Optic
VIsion (sensory)
Nuclei- hypo/thalamus, midbrain
Peripheral- retinal ganglion
III: Oculomotor
Eye movements (motor)
Oculomotor nucleus
Peripheral- extraocular muscles, levator palepbrae superioris, ciliary ganglion (autonomic)
IV: Trochlear
Eye movements (motor)
Trochlear nucleus
Peripheral- Superior oblique muscle
V: Trigeminal
Face sensory/motor
Trigeminal nuclei in brain stem
Peripheral- trigeminal
VI: Abducens
Eye movements (motor)
Abducens nucleus
Peripheral- lateral rectus muscle
VII: Facial
Facial motor, taste
Facial nucleus, solitary nucleus, superior salivatory nucleus
Peripheral- facial muscles, geniculate ganglion, pterygopalatine ganglion (autonomic)
VIII: Auditory/Vestibulocochlear
Hearing/balance (sensory)
Cochlear nucleus, vestibular nucleus/cerebellum
Peripheral- spiral ganglion (hearing), vestibular ganglion (balance)
IX: Glossopharyngeal
Throat motor, taste
Solitary nucleus, inferior salivatory nucleus, nucleus ambiguus
Peripheral- pharyngeal muscles, geniculate ganglion, Otic ganglion (autonomic)
X: Vagus
Visceral sensory/motor (autonomic)
Nucleus- medulla
Peripheral- trigeminal ganglia serving thoracic and upper abdominal organs (heart/small int)
XI: Spinal accessory
Head and neck motor
Spinal accessory nucleus
Peripheral- neck muscles
XII: hypoglossal
Lower throat motor
Hypoglossal nucleus
Peripheral- muscles of larynx and lower pharynx
