768 



TEE NERVE. 



are very slight, and are to be ascribed to the difference in form of the regions to which 

 the nerves are distributed. 



The shoulder of Man being short, and the other rays of the limb long and well 

 detached, the branches of the brachial plexus can be divided into collateral and terminal. 



The collateral branches are : 1, The subclavian branch, which is not found in our 

 animals, they having no subclavian muscle ; 2, The nerve of the angularis ; 3, Nerve of 

 the rhomboideus ; 4, Superscapular nerve ; 5, The serratus magnus (posterior thoracic) 

 nerve ; 6, Subscapular, which is divided at its origin into two branches as in the Sheep 

 and Carnivora ; 7, The nerves of the great and small pectorals (anterior thoracic) ; 8, The 



Fig. 353. 



THE NERVES OF THE AXILLA OF MAN. 



1, Scalenus medius ; 2, Scalenus anticus ; 3, Cord formed by 5th and 6th cervical 

 nerves ; 4, Seventh cervical nerve ; 5, Superscapular nerve ; 6, Subclavian artery, 

 cut ; 7, Insertion of subclavius ; 8, Cord formed by 8th cervical and 1st dorsal 

 nerves j 9, Pectoralis major, reflected ; 10, Internal anterior thoracic nerve ; 12, 

 Origin of subclavius ; 13, Pectoralis minor, reflected ; 14, Internal cutaneous 

 nerve; 15, Axillary artery, cut; 16, Posterior thoracic nerve, 17, Musculo- 

 cutaneous nerve ; 18, Origin of pectoralis minor; 19, Median nerve; 20, Nerve 

 of Wrisberg; 21, Coraco-brachialis ; 22, Intercosto-humeral nerve; 23, Ulnar 

 nerve ; 24, Subscapularis ; 25, Brachial artery ; 26, Lateral cutaneous branch of 

 3rd intercostal nerve ; 27, Middle subscapular nerve ; 28, Short subscapular 

 nerve; 29, Pectoralis major, cut; 31, Basilic vein; 32, Serratus magnus; 33, 

 Latissimus dorsi. 



accessory nerve of the internal cutaneous, represented in quadrupeds by the subcutaneous 

 thoracic ; 9, The nerve of the great dorsal ; 10, The nerve of the teres major. 

 The terminal branches go to the arm, fore-arm, and hand. They are : 

 1. The internal cutaneous, which in the Horse is furnished by the ulnar nerve. It 

 becomes subcutaneous at the upper third of the arm, and a little above the elbow bifur- 

 cates ; the anterior is spread on the front face of the arm to the wrist ; the posterior 



