start stage end stage cranial nerve VI Cranial nerve which exits the medulla oblongata and controls the lateral movement of the eye. The caudal and rostral roots fuse together and course rostrally once they are outside the brainstem. The abducens nerve innervates the lateral rectus extraocular muscle. nervus abducens CN-VI abducens nerve zebrafish_anatomy ZFA:0000310 TAO:0000310 cranial nerve unknown adult