Cranial Nuclei Flashcards
What is CN1 and its function?
Olfactory - smell
Where does CN1 exit the skull?
Cribiform plate
What is CN2 and its function?
Optic - sight
Where does CN2 exit the skull?
Optic foramen
What is CN3 and what is its function?
Occulomotor Motor • levator palpabrae superiori • inferior branch - middle rectus • inferior rectus • inferior oblique
Where does CN3 exit the skull?
Superior orbital fissure
What would a lesion in CN3 result in?
Loss of motor control of the eye
What is CN4 and what is its function?
Trochlear
Motor - superior oblique
Where does CN4 exit the skull?
Superior Orbital Fissure
What is CN5 and what is its function?
Trigeminal
Sensation to face
Motor - muscles of mastication
Where does CN5 exit the skull?
1) Superior orbital fissure,
2) Foramen Rotundum,
3) Foramen Ovale
What is CN6 and its function?
Abducens
Motor - lateral rectus
Where does CN6 exit the skull?
Superior Orbital Fissure
What is CN 7 and its function?
Facial
Facial expression muscles
Salivary secretions from submandibular and sublingual
Where does CN 7 exit the skull?
Internal Acoustic Meatus
What is CN 8 and its function?
Vestibularcochlear nerve
Hearing, balance and equilibrium
Where does CN8 exit the skull?
Internal Acoustic Meatus
What is CN9 and what is its function?
Glossopharyngeal
Sensation from the pharynx,
Taste in posterior third of tongue
Motor of stylopharyngeal muscle
Where do CN 9, 10 and 11 exit the skull?
Jugular foramen
What is CN10 and its function?
Vagus
Parasympathetic control of viscera
Motor control of larynx
Sensation of larynx
What is CN11 and its function?
Spino accessory
Motor of trapezius and sternocleidomastoid muscles
