splanchnopleure /splangk″nōplo͝or′/ [Gk, splanchna + pleura, side] , a layer of tissue in the early developing embryo, formed by the union of endoderm and splanchnic mesoderm. It gives rise to the embryonic gut and the visceral organs and continues externally to the embryo as the yolk sac and allantois. Compare somatopleure. −splanchnopleural, adj.
