Humerus

Features of Humerus Head – large, smooth rounded end that articulates with scapula Greater & lesser tubercles – points of muscle attachment for muscles that move the shoulder and arm Intertubercular sulcus – shallow groove between greater & lesser tubercles; holds tendons for biceps brachii muscle

Features of Humerus Anatomical neck - site of epiphyseal line Surgical neck – just below tubercles; place where most fractures occur

Features of Humerus Deltoid tuberosity – rough area along humerus where deltoid muscle attaches Coronoid fossa – on anterior surface; shallow depression for the ulna Radial fossa – on anterior surface; shallow depression for the radius

Features of Humerus Medial & lateral epicondyles – projections on the distal end where muscles of forearm attach Capitulum – on lateral side; articulates with radius Trochlea – on medial side; articulates with ulna

Features of Humerus Olecranon fossa – on posterior surface; where ulna fits with the humerus to form the hinged joint of the elbow