Cranial Nerves Flashcards
Olfactory nerve function
Smell
Optic nerve function
Vision
Oculomotor nerve function
- Movement of eye
- Constriction of pupils
- Focusing of eye
- Position of upper eyelid
Trochlear nerve function
Movement of eye
Trigeminal nerve function
- Chewing
- Sensation in the face
Abducent nerve function
Lateral eye movement
Facial nerve function
- Facial expression
- Taste (anterior 2/3 tongue)
Vestibulocochlear nerve function
- Hearing
- Balance
Glossopharyngeal nerve function
- Swallowing
- Taste (posterior 1/3 tongue)
Vagus nerve function
- Regulation of internal organ functions
- Speech
Accessory nerve function
Head and neck movement
Hypoglossal nerve function
Tongue movement
Divisions of trigeminal nerve and their specific functions
- Ophthalmic nerve (V1) = sensation above palpebral fissure
- Maxillary nerve (V2) = sensation above mouth + below ophthalmic
- Mandibular nerve (V3) = sensation below mouth, jaw movement
How does the olfactory nerve exit the skull?
Cribriform plate of ethmoid bone
How does the optic nerve exit the skull?
Optic canal
How does the oculomotor nerve exit the skull?
Superior orbital fissure
How does the trochlear nerve exit the skull?
Superior orbital fissure
How do the divisions of the trigeminal nerve exit the skull?
- V1 = superior orbital fissure
- V2 = foramen rotundum
- V3 = foramen ovale
How does the abducent nerve exit the skull?
Superior orbital fissure
How does the facial nerve exit the skull?
- Internal acoustic meatus
- Facial canal
- Stylomastoid foramen
How does the vestibulocochlear nerve exit the skull?
Internal acoustic meatus
How does the glossopharyngeal nerve exit the skull?
Jugular foramen
How does the vagus nerve exit the skull?
Jugular foramen
How does the accessory nerve exit the skull?
Jugular foramen
How does the hypoglossal nerve exit the skull?
Hypoglossal canal
