start stage end stage cephalic musculature extraocular musculature ZFA:0000511 ocular musculature TAO:0000511 Muscle system surrounding the eye. The extraocular musculature is derived from the neural crest. The extraocular muscles assume their adult configuration between 66 and 72 hpf. They differentiate contemporaneously with the eye vesicle, form precise anatomic attachments to sclera and bone, and are innervated by cranial nerves 3, 4, and 6. zebrafish_anatomy unknown adult