ZOOL 370 CH 5 (Cranial Nerves)
O­O­O­T­T­A­F­V­G­V­A­H *Specific Chart
Nerve
Basic Function
Motor/Sensory
1. Olfactory
Mucosa of nasal cavitysory
Sensory
2. Optic
Retina
Sensory
3. Oculomotor
Somatic­ precise eye muscle
movement
Visceral­ Parasympathetic
innervation of the constrictor
pupillae and ciliary muscles.
Motor
4. Trochlear
Controls 6 eye muscles
responsible for precise eye
movement, tracking/fixation
Motor
5. Trigeminal
V1­ opthalmic (s)
V2­ maxillary (s)
V3­ mandibular (s/m)
Motor­ muscles of mastication
Sensory­ face and head
6. Abducens
Lateral rectus eye muscles
responsible for lateral gaze
Motor
7. Facial
­Muscles of the face, taste, and
skin sensations (ear)
­Parasympathetic innervation of
facial glands/ mucous
membranes
Motor­ Muscles of facial
expression + parasympathetic
innervation
Sensory­ Sensation behind ear
and taste
8. Vestibulocochlear
Conducts 2 special senses;
hearing (audition) + balance.
Cochlea, vestibule, and
semicircular canals of inner ear
Sensory
9. Glossopharyngeal
Motor and sensory functions
within the mouth and tongue
(taste buds)
Motor­ muscles of pharynx;
parotid gland
Sensory­ posterior taste buds;
receptors in pharynx and carotid
sinus
10. Vagus
Motor and sensory functions
within mouth (taste) and
thoracic/abdominal organs
Motor­ muscles of pharynx/
larynx; thoracic/abdominal
organs
Sensory­ taste buds on
tongue/larynx;
thoracic/abdominal organs
11. Acessory
Muscles of larynx/pharynx, soft
palate, shoulder, and neck
Motor
12. Hypoglossal
Tongue muscles
Motor
*More basic chart
Cranial Nerve:
Major Functions:
I Olfactory
smell
II Optic
vision
III Oculomotor
eyelid and eyeball movement
IV Trochlear
innervates superior oblique
turns eye downward and laterally
V Trigeminal
chewing
face & mouth touch & pain
VI Abducens
turns eye laterally
VII Facial
controls most facial expressions
secretion of tears & saliva
taste
VIII Vestibulocochlear
hearing
(auditory)
equillibrium sensation
IX Glossopharyngeal
taste
senses carotid blood pressure
X Vagus
senses aortic blood pressure
slows heart rate
stimulates digestive organs
taste
XI Spinal Accessory
controls trapezius &
sternocleidomastoid
controls swallowing movements
XII Hypoglossal
controls tongue movements