ARTERIAL SYSTEM. 



239 



THE ARTERIAL SYSTEM.-Continuid. 



Anterior Cerebral j Ant. Communicating, 2 lines long. 



r Anterior, to anterior lobe of brain. 

 MIDDLE CEREBRALS Posterior, to middle lobe of brain. 

 ^Median, to the island of Reil. 



f anas, with Post. Cerebral of Basilar, to 

 Posterior Communicating, \ r , . . f Tir-n- 

 5 ' I form the circle of Willis. 



Anterior Choroid, to the choroid plexus, etc. 



THE CIRCLE OF WILLIS. 



f Post. Cerebral } Post. Commun. I MlDDLE } Ant. Cerebral 

 J ( CEREBRAL J 



BASILAR 



I Post. Cerebral j Post. Commun. j 



CEREBRAL 

 MIDDLE 



Ant. Commun. 



jAnt. Cerebral] 



