Veins of the Head. 



449 



Plexus pterygoideus Vv. temporales profundae 

 Vv. articulares mandibulaei i '. 



V. temporalis media 

 V. temporalis siiperficialis 

 Vv. auriculares anteriores 



M. temporalis 



/V. ophthalmica superior 



V. nasofrontalis 



- V. angularis 



v. ophthal- 

 mica inferior 



V. 



alveolaris 

 inferior 



Plexus 

 vertebralis - 

 posterior 



y. vertebralis 



M. 



semispinalis 

 capitis 



V. alveolaris 

 superior 



R.inius 

 profundus 



V. jugularis externa 



V. jugularis interna 



W. facialis anterior 

 V. facialis communis 

 V. facialis posterior 



488. Deep veins of the face, viewed from the right. 

 (The bones and muscles have been removed as in Fig. 438.) 



be) Vv. articulares mandibulae , from a plexus surrounding the joint of the jaw, which 



also receives the vv. Ujmpanicae (not illustrated) (through the fissura petrotympanica 

 [Glaseri] from the middle ear) and veins from the external auditory passage and 

 drum membrane and is connected with the plexus pterygoideus. 



bf) V. stijlomastoidea (not illustrated), corresponding to the artery of the same name, 



anastomoses at the hiatus canalis facialis with the vv. meningeae mediae. 



bg) V. transversa faciei (transverse facial vein), frequently double, corresponds to the 



artery of the same name, 

 bh) Plexus jfi^i'yQoideus extends from the fossa pterygopalatina as far as the coUura 

 mandibulae and lies, with wider vessels, on both sides of the m. pteiygoideus externus, 

 with narrower vessels, also on the medial surface of the m. pterygoideus internus and 

 on the membranous waU of the tuba auditiva ; it forms a sheath for the a. maxiUaris 

 interna. It receives: the v. sphenopalatina (from the nasal cavity through the 

 foramen sphenopalatinum), the vv. meniufjeae mediae (see p. 444), the vv. temporales 

 profundae (from the m. temporaUs, in which it forms a plexus with branches of the 

 v. temporahs media), the vv. massetericae , v. alveolaris inferior (the latter two 

 corresponding to the arteries of the same names) and the rete foramiais ovalis (see 

 p. 445). It anastomoses with the vv. articulares mandibulae and with the plexus 

 phar}Tigeus and empties in part through the ramus profundus v. facialis anterioris, 

 especially however through two valve-bearing vessels, which accompany the a. maxil- 

 laris interna, into the v. facialis posterior. 



