Function of cranial nerve 4 Health / By Seekhealthz Editorial What is the function of cranial nerve 4? Cranial nerve 4, the trochlear nerve, innervates the superior oblique muscle. Related Posts Function of cranial nerve 3What is the function of cranial nerve 3? Cranial nerve III innervates all the extraocular… Function of the Ia nerve fiberWhat is the function of the Ia nerve fiber? The Ia nerve arises from annulospiral… Where does cranial nerve 3 exit the brain stemWhere does cranial nerve 3 exit the brain stem? Cranial nerve 3, the oculomotor nerve,… Approach to localizing an isolated cranial nerve deficitWhat is the approach to localizing an isolated cranial nerve deficit? An isolated cranial nerve…