CRANIAL NERVES
Cranial nerve Motor/sensory Exit from skull
Olfactory nerve (CN I) Sensory Cribiform plate
Optic nerve (CN II) Sensory Optic canal
Oculomotor nerve (CN III) Motor
Trochlear nerve (CN IV) Motor
Superior orbital fissure
Trigeminal V1 (ophthalmic nerve) (CN V) Sensory
Abducens nerve (CN VI) Motor
Trigeminal nerve V2 (maxillary nerve) (CN Sensory Foramen rotundum
V)
Trigeminal nerve V3 (mandibular nerve) (CN Motor Foramen ovale
V)
Facial nerve (CN VII) Both Stylomastoid foramen
Vestibulocochlear nerve (CN VIII) Sensory Internal acoustic meatus
Glossopharyngeal nerve (CN IX) Both
Vagus nerve (CN X) Both Jugular foramen
Spinal accessory nerve (CN XI) Motor
Hypoglossal (CN XII) Motor Hypoglossal canal
, Final Exam Muscle O,I,A,I Chart
MUSCLES OF THE EYE
*for actions simplified see diagram on slideshow lesson 11*
*for innervations simplified see 3 bullet points on slideshow lesson 11*
Muscle Origin Insertion Action Innervation
Levator palpebrae Superior Elevation of upper Oculomotor nerve
superioris eyelid eye lid (CN III)
Superior oblique Sphenoid bone Intorsion, Trochlear nerve
depression, (CN IV)
abduction of
eyeball
Inferior oblique Extorsion,
Floor of orbit elevation,
abduction of
eyeball
Superior rectus Intorsion,
elevation, Oculomotor nerve
Sclera adduction of (CN III)
eyeball
Inferior rectus Extorsion,
Common depression,
tendinous ring adduction of
eyeball
Medial rectus Adduction of
eyeball
Lateral rectus Abduction of Abducens nerve
eyeball (CN VI)
MUSCLES OF MASTICATION
Muscle Origin Insertion Action Innervation
Temporalis Temporalis fossa Coronoid Elevation of jaw,
process of retracts mandible
mandible Trigeminal nerve -
mandibular
Masseter Zygomatic bone Angle and Elevation of jaw, branch (CN V3)
and arch lateral surface protracts mandible
of mandible
Cranial nerve Motor/sensory Exit from skull
Olfactory nerve (CN I) Sensory Cribiform plate
Optic nerve (CN II) Sensory Optic canal
Oculomotor nerve (CN III) Motor
Trochlear nerve (CN IV) Motor
Superior orbital fissure
Trigeminal V1 (ophthalmic nerve) (CN V) Sensory
Abducens nerve (CN VI) Motor
Trigeminal nerve V2 (maxillary nerve) (CN Sensory Foramen rotundum
V)
Trigeminal nerve V3 (mandibular nerve) (CN Motor Foramen ovale
V)
Facial nerve (CN VII) Both Stylomastoid foramen
Vestibulocochlear nerve (CN VIII) Sensory Internal acoustic meatus
Glossopharyngeal nerve (CN IX) Both
Vagus nerve (CN X) Both Jugular foramen
Spinal accessory nerve (CN XI) Motor
Hypoglossal (CN XII) Motor Hypoglossal canal
, Final Exam Muscle O,I,A,I Chart
MUSCLES OF THE EYE
*for actions simplified see diagram on slideshow lesson 11*
*for innervations simplified see 3 bullet points on slideshow lesson 11*
Muscle Origin Insertion Action Innervation
Levator palpebrae Superior Elevation of upper Oculomotor nerve
superioris eyelid eye lid (CN III)
Superior oblique Sphenoid bone Intorsion, Trochlear nerve
depression, (CN IV)
abduction of
eyeball
Inferior oblique Extorsion,
Floor of orbit elevation,
abduction of
eyeball
Superior rectus Intorsion,
elevation, Oculomotor nerve
Sclera adduction of (CN III)
eyeball
Inferior rectus Extorsion,
Common depression,
tendinous ring adduction of
eyeball
Medial rectus Adduction of
eyeball
Lateral rectus Abduction of Abducens nerve
eyeball (CN VI)
MUSCLES OF MASTICATION
Muscle Origin Insertion Action Innervation
Temporalis Temporalis fossa Coronoid Elevation of jaw,
process of retracts mandible
mandible Trigeminal nerve -
mandibular
Masseter Zygomatic bone Angle and Elevation of jaw, branch (CN V3)
and arch lateral surface protracts mandible
of mandible
