']2 DISSECTION OF THE NECK. 



b. Supra-scapular Nerve to muscles on the dorsal 

 side of the scapula. 



c. Sub-scapular Nerve to muscles on the ventral 

 side of the scapula. 



d. Musculo-cutaneous Nerve supplies the biceps 

 and may be traced finally to the elbow, where it breaks 

 up into fibres distributed to the skin of the elbow and 

 fore-arm. 



e. Circumflex Nerve sends some branches to 

 the teres major and the sub-scapular muscles, and then 

 passes dorsally between the insertion of the teres major 

 and the triceps, giving off branches to the triceps and 

 the anterior deltoid muscles. 



f. Musculo-spiral Nerve passes obliquely round 

 the humerus to the dorsal side to reach the radial side 

 of the fore-arm, where it divides into two branches, the 

 radial and posterior inter-osseus nerves. It supplies 

 the muscles and skin of the back of the arm, and in 

 the fore-arm is distributed to the muscles and the 

 digits of the radial side. 



g. The Median Nerve. 



h. The Ulnar Nerve. These two nerves arise 

 together from the 8th cervical and ist thoracic nerve ; 

 they pass to the fore-arm and hand, to which they are 

 distributed. 



i. A branch to the teres major and latissimus dorsi 

 muscles. 



k. The Interal Cutaneous Nerve. Besides giv- 

 ing some branches to the pectoral muscles this is dis- 

 tributed to the skin on the inner side of the arm. 



20. The Intrinsic Muscles of the Larnyx. 

 To dissect these muscles it is better to remove the 

 larynx and epiglottis entirely from the body. Cut 



