MUSCLES OF ANTERIOR NECK. 48T 



daman artery and brachial plexus behind it, and the sterno- 

 mastoid and omo-hyoid muscles in front. 



The second scalenus or medius has the subclavian and 

 brachial plexus in front, and is covered by the first. 



The longus colli is situated close upon the bodies of the 

 vertebras, upon either side of the median line. It arises 

 from the bodies of the three superior dorsal vertebras at 

 their sides, and from the transverse processes of the lower 

 cervical vertebras, and also occasionally by a slip from tho 

 first and second rib. Its insertion is into the front of the 

 bodies of the cervical vertebrae. 



Function. To bend the neck directly forward and to the 

 one side. The division of this muscle into a superior and 

 inferior portion, has led to some apparent discrepancy among 

 anatomists, as to its origin and insertion, though there is 

 general uniformity as to its several attachments. 



Upon this muscle rests the pharynx, oesophagus, and the 

 great cervical vessels and nerves with their sheaths. 



Rectus capitis anticus major. At the superior and ante- 

 rior part of the neck there are three recti muscles, the 

 major, minor, and later alls. 



Dissection. These are deep muscles, and are seen along 

 with the longus colli, on the removal of the oesophagus and 

 pharynx. 



The rectus capitis anticus major arises tendinous from the 

 transverse processes of the four lower cervical vertebrae. 

 The four tendons ascend, and becoming fleshy, proceed 

 obliquely inward, forming a broad and thick muscle, which 

 is inserted into the cuneiform process of the occipital bone, 

 just in front of the condyle. 



Function. To bend the head and also the neck forward. 



Eectus capitis anticus minor is a small and narrow mus- 

 cle. It arises from the front of the atlas near its trans- 

 verse process, and is inserted into the cuneiform process of 

 the occipital bone, beneath the rectus major. 



Function. To bend the. head forward and to one side. 

 The superior cervical ganglion of the sympathetic rests in 

 part upon this muscle. 



