Humerus肱骨 ower end: capitulum肱 骨小头, trochlea肱骨滑 车窝 coran i d fossa冠突 and radi a fossa桡窝 (anter ior l y)and o lear anon y a鹰嘴窝 (posterior I lateral and medial epicondy les 内、外上髁, and sulcus for ulnar nerve尺神经沟Humerus 肱骨 ◼ Lower end: capitulum 肱 骨小头, trochlea 肱骨滑 车, coranoid fossa 冠突 窝and radial fossa 桡窝 (anteriorly) and olecranon fossa鹰嘴窝 (posteriorly), lateral and medial epicondyles 内、外上髁, and sulcus for ulnar nerve 尺神经沟