450 



Veins of the Nect. 



Anastomosis with the v. sublingualis 

 V. submentalis 

 v. comitans n. \ 



hypoglossi 



V. lingualis 

 V. palatina 

 V. facialis 

 anterior 



M. steruocleido- 

 masto ideas 



V. j ugularis i 



externa 



Vv. thyreoideae 

 superiores 



Ramus deseenden.' 

 n. liypoglossi 



M. digastricus (venter anterior) 

 M. mvlohvoideus 



- -V. facialis 

 anterior 



V. facialis 

 posterior 



V. facialis 

 communis 



_M. omohyoideus 

 M. sternohyoideus 



V. jugularis 

 externa 



V. jugularis anterior 

 V. jugularis externa 



V. subclavia 



M. slernocleido- 

 mastoideus 

 .Arcus venosus 

 juguli 

 V. transversa 

 I colli 



V. axillaris 



V. cephalica 



489. Veins of the neck, viewed from in front. 

 (On the right the m. sternocleidomastoideus, on the left the m. pectoraUs major, has been removed.) 

 V. jUjETUlaris externa (external jug-ular vein) (see also Figs. 486488) arises below 

 the ear by two roots: the antiiU2' ft'cqnently the larger, comes from the v. facialis posterior 

 (see p. 448), the posterior arises behind the ear. It crosses the m. sternocleidomastoideus 

 obliquely, covered by the platysma, goes into the depth and opens usually into the v. subclavia, 

 generally with the v. juiru laris ant^ 'rior. Valves at its mouth and in its middle. Branches: 



1. V. occipitalis corresponds to the artery. It opens partly into the preceding vein, 

 partly doubled, accompanies the arteiy to the v. jugularis interna; it anastomoses with the 

 })le.\us vertebralis posterior. 



2. V. aiiriciilaris posterior from the superficial jilexus behind the ear. 



3. V. jugularis anterior, downward from the chin upon the mm. mylohyoideus and 

 sternohyoideus, extends lateralward below the origins of the m. sternocleidomastoideus to the 

 V. jugularis externa or the v. sulj^Javia. It anastomoses with the adjacent veins, and, by the 

 large arcus venoxus juguli, below the glandula tliyreoidea with the vein of the opposite side. 

 More rarely instead of this vein only an unj)airt'd median trunk (v. mediana colli) is present. 



