somatopleure

A layer of cells in a vertebrate embryo, formed by association of part of the mesoderm with the ectoderm and developing as the internal body wall.

The outer one of two divisions of the mesoderm of a four-layered germ, the inner one being the splanchnopleure.

The outer, or parietal, one of the two lamellæ into which the vertebrate blastoderm divides on either side of the notochord, and from which the walls of the body and the amnion are developed. See splanchnopleure.

A fold of tissue, in the embryo of a vertebrate, from which the walls of the body and the amnion develop.