THE UPPER LIMB 



337 



and in the lower half the brachial artery and median nerve. Ex- 

 ternal to it is the cephalic vein. The biceps sometimes has a third 

 head, which usually arises from the inner side of the humerus 

 at or near the insertion of the coraco-brachialis. As a rule, it 



Deltoid . 



Biceps . 

 Coraco-brachialis . 



Musculo-cutaneous Nerve ._ 



Brachialis Anticns. 



Musculo-spiral Nerve—.. 

 Brachio-radialis 



Radial Nerve — 

 Posterior Interosseous Nen-e 



Supinator Radii Brevis 



Ulnar Artery 



Radial Artery , 



Latissimus Dorsi 

 Teres Major 



Ulnar Collateral Nerve 



of Krause 

 Ulnar Nerve 

 Long Head of Triceps 

 Brachial Artery 

 Median Ner%-e 

 Inner Head of Triceps 



Internal Intermuscular 

 Septum 



Internal Epicondyle 



Flexor Carpi Radialis 



.Palmaris Longus 

 .Flexor Carpi Ulnaris 



^ Pronator Radii Teres 



Fig. 187. — Dissection of the Right Brachial Region, and 

 Bend of the Elbow. 



3 external to the brachial artery, but sometimes it crosses the 

 yessel. 



I Brachialis Anticus— Or/gm.— (i) The lower half of the front of 

 •he humerus ; (2) the front of the internal intermuscular septum over 

 he whole of its extent ; and (3) the front of the external intermus- 

 l-ular septum for a short distance above. 



