MUSCLES OF THE THORACIC LIMBS. 



169 



articular head, and its apex about one-sixth the length of the 

 humerus from the head. It is between the coracobrachialis 

 and the lateral head of the triceps. 



Fig. 80. — Deep Muscles on the Lateral Surface of the Humerus. 



a, part of M. supraspinaUis; l>, part of M. infraspinatus; c, M. teres minor; d, M. 

 teres major; e, part ofM. latissimus dorsi joining M. teres major; /, long part of caput 

 medialeofM. triceps brachii; ^, cut insertion of M. acromiocleltoideus; /^ M. brachi- 

 alis; i, M. brachioradialis; J, intermediate part of caput medialeof M. triceps brachii; 

 I-, M. extensor carpi radialis iongus; /, M. anconeus; w, M. extensor communis digi- 

 toruni. I, great tuberosity of humerus; 2, 3, superficial radial and dorsal interos- 

 seous branches, respectively, of the radial nerve. 



Insertion (Fig. 86, 'a). — The muscle ends in a long, slen- 

 der tendon which passes through the furrow on the ventral 



