Mésoderme
The mésoderme (or mésoblaste), in opposition to the Endoderm and with the Ectoderm, is the intermediate cellular layer of the embryo of the Métazoaire S which is set up at the time of the Gastrulation. The cells, which derive, form from them in whole or part the internal bodies except for the nervous system (drifting of the Ectoderme) and of the bodies of the digestive system (resulting from the Endoderme): thus, in the mammals, the mésoderme gives rise to the Poumon S, with the Vertèbre S, part of the Cerveau, with the striated Muscles, the Blood-vessels, the Blood cells, the Rein S, to the Os… It also limits the séreuses cavities (or coelomic cavities) of mesoblastic origin.
The skeletal system derives from the mésoderme. During the embryonic development, the mésoderme is divided into celebrities (or métamères), which will be different, from surface towards the depth, in dermomyotome, myotome and sclérotome.
See too
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