MUSCULAK SVSTEIVJ. HI 



2(i, 3cl, 4th, 5tli, and Gtli cervical vertebrse : anteriorly, to the 

 cuneiform process of the occipital bone. 



Relations. — Superiorly, with the vertebrni longus colli, and 

 following muscle : inferiorly, with the oesophagus on the left side, 

 and with the trachea and larynx on the right, and also with the 

 membrane of the fauces. The carotid artery runs along its in- 

 ferior border. 



Structure. — Posteriorly, consisting of slender fleshy fasciculi, 

 including two or three long slips of tendon: anteriorly, it is 

 fleshy, intersected by a broad flat tendon. 



Action. — To bend the head : one acting only, will incline it, at 

 the time of depression, to one side. 



RECTUS CAPITIS ANTICUS MINOR. Atloido-iuhoCcipitaUs. 



Situation. — Deep-seated : at the back of the cavity of the 

 fauces. 



Form. — Short, slender, cylindroid. 



Attachment. — Posteriorly, to the lower part of the body of the 

 atlas : anteriorly, the same as the foregoing muscle. 



Relations. — Inferiorly, with the preceding muscle; superiorly, 

 with the capsular ligament of the occipital joint. 



Structure. — Pale and entirely fleshy. 



Action. — To assist the major. 



OBLiQUus CAPITIS ANTICUS. — Atloido-stjjloideus. 



Situation. — To one side, at the back of the fauces. 



Attachment. — Posteriorly, close to the rectus minor, to the 

 body of the atlas : anteriorly, to the postero-inferior part of the 

 coronoid process of the occipital bone. 



Relations. — Above, with the occipital articulation ; below 

 and to the inner side, with the rectus major anticus; to the outer 

 side, with the parotid gland. 



Action. — The same as that of the former muscle. 



MUSCLES OF THE THORAX. 

 1 —DORSO-SCAPULAR REGION. 

 The muscles included in this region form three of the princi- 

 pal agents concerned in the motions of the scapula. 



TRAPEZIUS . — Dorso-acromia/is. 



Situation. — Upon the side of the withers. 



Figure. — A right-angled triangle ; with the base turned up- 

 wards, and the right side forwards, in a parallel line with the 

 spine of the scapula. 



Attachment. — Superiorly, to the spinous processes of the 3d, 

 4th, 5th and 6th dorsal vertebra?, and to the lioament and faschia 



