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HANDBOOK OF ANATOMY 



covering the surfaces of the olecranon and coroiioid processes, 

 thus separating the two. 



The synovial membrane lines all the joint, including those 

 parts not covered by cartilage, and is continuous with that 

 lining the superior radio-ulnar joint. 



The Radio-Ulnar Joints, between the extremities of the 

 opposing surfaces of the radius and ulna. These joints are 



Clavicular part of Pectoralis Major 

 Clavicular part of Deltoid x 



Coraco-brachialis 



Sterno-costal part 

 of Pectoralis 

 Major 



Latissimus Dorsi and 

 Teres Major 



Biceps. 

 Long Head of Triceps 



Brachialis Anticus. 



Supinaior Radii 



Brevis 

 Brachio-radialis 



Obliquus Ext Abdominis 

 Serratus Magnus 



Internal Head of Triceps 



--.Brachialis Anticus 

 ..Pronator Radii Teres 



-Flexor Carpi Radia'is 

 Palmaris Loneus 

 Flexor Carpi Ulnaris 



FIG. 8. MUSCLES OF THE UPPER ARM. 



both gliding joints, and by their means the radius is enabled to 

 turn round on the ulna, causing pronation and supination of the 

 hand. (Pronation = palm downwards ; supination = palm upwards.) 



Superior Radio-Ulnar Joint, between the head of the radius 

 and the radial notch on the outer surface of the ulna. 



Ligaments. Orbicular ligament, a ring of strong tendinous 

 fibres attached to the extremities of the radial notch on the ulna 



