part of part of serially homologous to develops from develops from Homo sapiens sternum manubrium of sternum http://upload.wikimedia.org/wikipedia/commons/2/23/Gray116.png manubrium of sternum MA:0001332 NCIT:C52730 UBERON:0002205 May be cartilage in some species. manubrium sterni FMA:7486 sternum rostrum UMLS:C1710195 Wikipedia:Manubrium sternal manubrium manubrium EMAPA:18723 sternal rostrum The cranial most segment of the sternum. Located ventrally with a quadrangular shape, wider superiorly and narrower inferiorly, it articulates with the clavicles and the first two ribs[MP,WP]. GAID:247 SCTID:182014008 MESH:D008371 sternebra thoracic segment organ manubrium of malleus endochondral element manubrium sternum pre-cartilage condensation