Myotome 2757832 220428243 2008-06-19T20:30:33Z 189.63.173.52 /* External links */ {{Infobox Embryology | Name = Myotome | Latin = | GraySubject = 17 | GrayPage = 80 | Image = Gray65.png | Caption = Scheme showing the manner in which each vertebral centrum is developed from portions of two adjacent segments. (Myotome labeled in upper right.) | Image2 = Gray64.png | Caption2 = Transverse section of a human embryo of the third week to show the differentiation of the primitive segment. ao. Aorta. m.p. Muscle-plate. n.c. Neural canal. sc. Sclerotome. s.p. cutis-plate. ("Muscle-plate" is an older term for "myotome.") | System = | CarnegieStage = 13/14 | Precursor = [[somite]] | GivesRiseTo = [[muscle]] | MeshName = | MeshNumber = | DorlandsPre = m_25 | DorlandsSuf = 12556517 | }} In [[vertebrate]] [[embryonic development]], a '''myotome''' is a group of tissues formed from [[somites]] that develop into the body wall muscle. Each myotome divides into a [[Dorsum (biology)|dorsal]] [[epaxial]] part and a [[ventral]] [[hypaxial]] part. The epaxial muscle mass loses its segmental character to form the [[extensor muscle]]s of the neck and trunk. The [[myoblast]]s from the hypaxial division form the muscles of the thoracic and anterior abdominal walls. The term "myotome" is also used to describe the muscles served by a single nerve.<ref>{{eMedicineDictionary|myotome}}</ref> It is the motor equivalent of a [[Dermatomic area|dermatome]]. ==See also== [[Dermatome (Anatomy)]] ==References== {{Reflist}} ==External links== * {{EmbryologyUNSW|Notes/skmus7}} * {{EmbryologyUNSW|Notes/week3_6}} * {{EmbryologyUNC|mslimb|009}} {{Embryology}} [[Category:Embryology]] {{developmental-biology-stub}} [[pt:Miótomo]]