MUSCLES OF THE BODY. 



143 



^;|!\f 



ear. Lateral surface with the scalenus (Fig. 72, h) and craniad 

 with the levator scapula ven- 

 tralis (Fig. 72, c-c"). Medial 

 surface with the carotid artery, 

 the trachea, oesophagus, and 

 pharynx. Dorsal edge with 

 the vertebrae, the longus colli 

 (Fig. 72, g'), and the rectus ca- 

 pitis anterior minor (Fig. J 2,1)). 



Action. — Lowers the snout. 



M. rectus capitis anterior 

 minor (Fig. 72, /7).— This is a 

 flat band beneath (dorsad of) 

 the longus capitis {a). 



Origin from the ventral sur- 

 face of the inferior arch (body) 

 of the atlas (3) for about five 

 millimeters laterad of the mid- 

 dle line. 



Insertion into a deep depres- 

 sion on the basioccipital caudad 

 of the insertion of the longus 

 capitis {(i) and between the 

 caudal end of the bulla (1) and 

 the median line. 



Relations. — Ventral surface Fig. 72.— Muscles on the Ventral 



• ,i ,1 1 •*.• / \ Surface of the Cervical Ver- 



with the longus capitis {a). xp,iR,Tj 



Dorsal surface with the anterior On the left side the longus capitis and 



(ventral) atlantO-OCCipital mem- f"^ head of the levator scapuln^ventralis 

 ^ ' '■ have been cut, in order to show the rec- 



brane (2). tus capitis anterior minor, a, M. longus 



Action. — Depresses 

 snout. 



,1 capitis; b, M. rectus capitis anterior 

 minor; c, M. levator scapulx ventralis 

 {(' , its atlantal head; c". its occipital 



M, 'f t f -I- head); d, M. rectus capitis lateralis; <', 



. rectus capitis lateralis M. obliquus capitis superior;/, M.longis- 



(Fig. 72, d). — This lies ventrad simus capitis; g, M. longus colli (/, its 



- , ... • / \ cervical portion; g", its thoracic por- 



0\ the obhqUUS superior {e) on Hon); h, part of M. scalenus. I, bulla 



the ventral face of the transverse tymp/i"' ; 2, ventral atlanto-ocdpital 



membrane; 3, ventral arch of atlas; 4, 



process of the atlas and at first first rib. 

 appears to be a part of the obliquus superior. 



