transformation of luminal space of coelemic cavity lumen The cavity within the body of all animals higher than the coelenterates and certain primitive worms, formed by the splitting of the embryonic mesoderm into two layers. In mammals it forms the peritoneal, pleural, and pericardial cavities. UBERON:0002323 body cavity UBERON:0000169 space of body compartment coelom FMA:85006 SCTID:361348008 RETIRED_EHDAA2:0003186 TAO:0001438 BTO:0001707 galen:BodyCavity ventral body cavity AEO:0000186 NCIT:C25444 EDITOR_NOTE check the FMA placement here; ncit placement of body cavity here probably not correct main body cavity hemocoel coelomic cavity lumen celom coelome coelomic cavity EHDAA2:0000267 anatomical cavity future coelemic cavity lumen coelom