45G 



THE MUSCLES 



Inner Group 



The inner or prevertebral group consists of the greater and lesser rectus capitis 

 anticus and the longus colli. 



1. RECTUS CAPITIS ANTICUS MAJOR 



The rectus capitis anticus major — named from its direction, position, and 

 size — is a thick, irregular, quadrilateral sheet. 



Origin. — The front of the anterior tubercles of the third, fourth, fifth, and 

 sixth cervical vertebrae. 



Fig. 316.— The Muscles of the Front of the Neck. 



Rectus eapitia lateralis 



Rectus capitis auticus 

 major 



Origin of rectus capitis 

 anticus major 



Scalenus medius 



Scalenus auticus 



Scalenus posticus ""• 



Rectus capitis later- 

 alis 

 Rectus capitis anti- 

 cus minor 



Intertransversalia 

 anterior 



Intertransversalia 

 posterior 



Longus colli 



nsertion of scalenus 

 anticus 



Scalenus medius 



Scalenus, posticus 



Insertion. — A transverse impression upon the under surface of the basilar 

 process of the occipital l)one, extending from just l)ehind the pharyngeal tubercle 

 outwards and somewhat forwards. 



Structure. — Arising by four tendinous teeth, tlie jiarallel fleshy fibres run 

 upwards and inwards to be inserted directly upon the occii)ital bone. An incom- 

 plete tendinous intersection crosses its anterior surface. 



Nerve-supply. — Internal branches from tlie first and second cervical nerves 

 enter the upper part of its front surface. 



