preaxialmost part of develops from develops from composed primarily of Homo sapiens radius bone MA:0001357 AAO:0000788 NCIT:C12777 The major preaxial endochondral bone in the anterior zeugopod[Phenoscape]. MESH:D011884 VSAO:0005012 FMA:23463 Wikipedia:Radius_(bone) One of the two long bones of endochondral origin of the fore-epipodium; it is located on the lateral side of the ulna. Its upper end articulates with both the humerus and the ulna, whereas the lower articulates with the carpals.[AAO] EMAPA:19103 radius Due to the presence of the radius in Tetrpodomorph fish this element is not inherently linked to the presence of digits or flexor musculature. The corresponding bone in the posterior fin/limb is the tibia.[Phenoscape]. In four-legged animals, the radius is the main load-bearing bone of the lower forelimb. Its structure is similar in most terrestrial tetrapods, but it may be fused with the ulna in some mammals (such as horses) and reduced or modified in animals with flippers or vestigial forelimbs [ISBN:0-03-910284-X] CALOHA:TS-2199 GAID:185 SCTID:181940002 galen:Radius UMLS:C0034627 UBERON:0001423 bone tissue forelimb zeugopod bone forelimb long bone radius cartilage element forelimb zeugopod skeleton radius endochondral element