part of part of contributes to morphology of luminal space of mouth oral cavity UMLS:C0226896 AAO:0000960 EMAPA:18399 Echinoderms, hemichordates, and chordates are called deuterostomes because the mouth arises not from the blastopore but from a second invagination at the anterior end of the larva that pushes in to connect with the archenteron.[well established][VHOG] WBbt:0005255 SCTID:181220002 UBERON:0000167 EHDAA2:0001324 The cavity of the mouth, bounded by the jaw bones and associated structures (muscles and mucosa). [TFD][VHOG] CALOHA:TS-1315 HAO:0000669 EHDAA:6970 AAO:0000053 EV:0100057 NCIT:C12421 BSA:0000107 EMAPA:17411 cavity of mouth Anatomical cavity bounded anteriorly by the mouth and posteriorly by the derivatives of the branchial arches.[AAO] buccal cavity EFO:0001975 XAO:0000126 VHOG:0000188 Anatomical cavity at the start of the digestive tract that that is enclosed by the mouth. The boundaries and contents vary depending on the species. In vertebrates, the boundaries are the oral opening, the cheeks, the palate and (if present) the palatoglossal arch - if this is not present then the mouth and pharynx form the oropharyngeal cavity. The buccal cavity contains the teeth, tongue and palate (when present). TGMA:0000102 FMA:20292 MESH:D009055 TAO:0001027 ZFA:0001027 bucca anatomical space anatomical cavity