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11
CN IV: Trochlear Nerve
Function?
Where does it exit? What skull hole does it pass through?
Dysfunction?
Function?
Where does it exit? What skull hole does it pass through?
Dysfunction?
Function: motor to dorsal oblique m. (GSE)
Exits the dorsal surface of the brain stem (only cranial nerve to do so)
Courses through orbital fissure
Dysfunction: eye rotates on anterior/posterior axis so that the ventral part moves medially
Exits the dorsal surface of the brain stem (only cranial nerve to do so)
Courses through orbital fissure
Dysfunction: eye rotates on anterior/posterior axis so that the ventral part moves medially
