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
