Uberon Development note : Myofibers in extraocular muscles are derived from mesoderm, whereas muscle connective
tissue cells arise from neural crest.[PMID:16638982];
Uberon Homology note : The ability to rotate the eyeball is common to all vertebrates with well-developed
eyes, regardless of the habitat in which they live, so these (extrinsic ocular) muscles
tend to be conservative. They change little during the course of evolution.[well established][VHOG];
Uberon Taxon note : Mammals have 7 extra-ocular muscles, but humans lack the M. retractor bulbi.;