ulna,phalanges

尺骨(ulna),位于前臂内侧,前臂两根长骨之一,是较长骨,可分为一体
肩胛骨scapula 肱骨humerus 桡骨radius 自由上 尺骨ulna
the radius is the thick bone in the forearm, and the ulna is
closeup view of proximal and distal ends of ulna bone, labelled
[commission] suit source;illust/68521686 本作品由ulna·radi分享