Muscles of the Neck. 



261 



Spatiuin suprasternale 



Trachea 



Oesophagus 



Fascia prae- 



vertebralis 



Corpus 



vertebrae 



cerviealis VII 



Foramen 

 vertebrate 



Glandiila thyreoidea (lobus dexter) 



] M. sternohyoideus 



' I Fascia colli 



M. sternothyreoideus 



' M. omohyoideus 



A. oarotis communis 



E. dcscendens n. hypoglossi 



N. vagus 



T.yniphoglaudula 



N. synipathicus 

 _ N. phrenicus 



__V. jugularis interna 



Mm. longi colli 

 et capitis 

 _ Plexus 

 brachialis 



^^ M. sternocleido- 

 mastoideus 



Mm. scaleni 



Platysma 



Fascia colli 



Fat 



.Muscles of 

 the neck 



M. trapezins 



307. Transverse 

 section through 

 the neck, at the 

 level of the uppermost cartilages of the trachea, 



viewed from above (after Fr. Merkel). 



The fascia praevertebralis is a thin but strong membrane which covers the anterior 

 surface of the cervical spine and the deep muscles of the neck : part of it descends with these 

 into the thorax, part extends upon the outer surface of the mm. scaleni and of the thurax: 

 it covers directly all the muscles represented in Fig. 304. 



The fascia colli extends as a strong membrane from the hj'oid bone to the sterniun and 

 clavicle in front of the larynx, laryngeal muscles and trachea. It is attached to the sternum 

 by two leaves, which enclose the spatinm suprasternale and its fetty contents. Laterally it 

 extends above in front of the m. omohyoideus and past it as far as the anterior surface of 

 the bundle of blood vessels, where it becomes lost ; it forms a sheath for the intermediate tendon 

 and the venter inferior of the m. omohyoideus. Behind, it becomes thinner and passes 

 below the m. sternocleidomastoideus , upon the fat which helps to fill up the lateral cervical 

 triangle, and below the m. trapezius to the lig. nuchae ; the external surface of the mm. stermi- 

 cleidoinastoideus and trapezius is covered only by delicate muscle -fascia. 



