EMBRYOLOGIC DIVISIONS OF THE BRAIN. 



. Prosenceph- 

 alon. (fore- 

 brain) 



j- Cerebrum 



Mesencephalon 

 (mid-braiu) 



--Cere- 1 



bellum ! Metencephalon 



(hind-brain) \ Rhomben- 

 N Pons (Varolii) J 

 Myelencephalon 

 (Medulla oblongata) 



cephalon 



Encephalon 

 (brain) 



' ~ Pars cervicalis ") 



' Pars thoracalis 



- Pars lumbalis 



Pars sacralis or 

 1 conus medullaris J 



Spinal cord 

 (medulla sfnnalis) 



Fig. 15. Divisions of the brain. Diagrammatic. (After Morris's Anatomy.) 



