Cranial Nerves Basics Flashcards
CN 1
Olfactory Nerve - Olfactory Sensory Neuron
Olfaction = Sense of Smell
Originates in Cerebrum
CN 2
Optic Nerve - Vision
Sensory
Originates in cerebrum
CN 3
Oculomotor - Motor/ Eye movement
(autonomic functions: eyelid elevation, pupillary constriction, Lens Accommodation)
Originates Midbrain
CN 4
Trochlear: Motor/ eye movement
Originates in Midbrain
CN 5
Trigeminal - Both Sensory and Motor (
afferent and efferent)
-Sensory: Facial sensation v1 v2 v 3 Tongue (ant 2/3
-Motor: Mastication (biting/Chewing)
Originates in Pons
CN 6
Abducens Motor/Eye movement
originates in Pontomedullary Region
CN 7
Facial-Sensory and Motor
Sensory: Taste (ant 2/3)
Motor: facial expression, Eyelid closing,
salivation, laceration / tears
Originates Pontomedullary Region
CN 8
Vestibulocochlear -Balance & Hearing (sensory)
Auditory Nerve
Originates in Pontomedullary Region
CN 9
glossopharyngeal- Motor and Sensory
Sensory: taste/sensation on tongue, Sensation of Pharynx, chemo baroreceptors
Motor: Swallowing and Salivation
Originates in medulla oblongata
efferent means?
Motor
afferent means?
Sensory
CN 10
Vagus-Longest nerve!
Sensory: Skin around ear, pharynx, larynx thorax and abdomen, taste/sensation of epiglottis.
Motor: Swallowing, Speech, Coughing
(autonomic/Parasympathetic
originates in medulla oblongata
CN 11
Accessory “spinal” Nerve
Motor: Shoulder Shrugging, head turning
Medulla Oblongata
CN 12
Hypoglossal nerve
Motor: movement of most of the muscles in your tongue.
Originates Medulla Oblongata
Cranial Nerve Mnemonic
O- ON Olfactory Some
O- OCCASION Optic Say
O- OUR Oculomotor Marry
T- TRUSTY Trochlear Money
T- TRUCK Trigeminal But
A- ACTS Abducens My
F- FUNNY Facial Brother
V- VERY Vestibulocochlear Says
G- GOOD Glossopharyngeal Big
V- VEHICLE Vagus Brains
A- ANY Accessory Matter
H- HOW Hypoglossal More
