somatic layer
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so·mat·ic lay·er
the external layer of the lateral mesoderm of the embryo, lying adjacent to the ectoderm and together with it constituting the somatopleure.
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somatic layer
In the embryo, a layer of extraembryonic mesoderm that forms a part of the somatopleure, the outer wall of the coelom.
See also: layer
Medical Dictionary, © 2009 Farlex and Partners