DISSECTION OF THE HEAD AND NECK 



319 



the large trunks and passing out to the finer subdivisions. Do 

 not injure the brain substance. 



FIG. 140. 



The arteries of the base of the brain. 



T, lobus temporalis (cut off) ; T-XII, Nn. cerebral es; Accra, art. cerebri anterior; Coma, art. com- 

 municans anterior ; A FSy, art. cerebri media ; A lent, art. lenticularis ; 1-5, the cortical chief branches 

 of the A cer. med. ; cp, art. communicans posterior ; A cha, art. chorioidea ; ch, a small branch of the 

 preceding which goes into the plexus chorioidei ; x, lateral branches of the A. com. post. ; A cp, art. 

 cerebri posterior ; p, short branches of the preceding ; A bas, art. basilaris ; A t, art. temporalis (Duret) ; 

 Aocc, art. occipitalis (Duret) ; JUvrv//>. art. cerebelli superior; A cer med, art. cerebelli inferior ante- 

 rior; A cerinf, art. cerebelli inferior posterior : .1 n rf, art. vertebralis; Spa, art. spinalis anterior. (After 

 Monakow, Gehirnpathologie, Wien, 1897, p. 668, Fig. 151.) 



Arteries. 



(a) Vertebral artery (A. vertebralis). 



(aa) Posterior spinal artery ( A. spinalis posterior). 



(ab) Anterior spinal artery (A. spinalis anterior). 



