Skeletal muscle derived from cranial mesoderm and controls eye movements. [ ]

Synonyms: extrinsic ocular muscle extraocular skeletal muscle extrinsic muscle of eyeball extra-ocular skeletal muscle extrinsic eye muscle extraocular musculature extraocular muscle

This is just here as a test because I lose it

Term information


uberon_slim, efo_slim, pheno_slim, vertebrate_core

depicted by

development notes

Myofibers in extraocular muscles are derived from mesoderm, whereas muscle connective tissue cells arise from neural crest.[PMID:16638982]

editor note

todo - resolve discrepancies in which muscles are considered extra-ocular

external definition

Any of the six small muscles that control movement of the eyeball within the socket. [TFD][VHOG]
Muscles surrounding the eye (bulbus oculi) and having an effect on eye movements.[AAO]

external ontology notes

BTO and MA consider this part of the eye; we follow them here (inferred from skeletal muscle). Not clear if omission from FMA is deliberate.

has alternative id


has related synonym

musculi externi bulbi oculi

homology notes

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]



taxon notes

Mammals have 7 extra-ocular muscles, but humans lack the M. retractor bulbi.