56 



LABORATORY OUTLINE OF NEUROLOGY 



59. Examine carefully the cut surfaces of both the human 

 and the sheep's brains, identifying all median structures thus 

 brought into view. Note again the arrangements of the chief 

 subdivisions of the brain referred to in Section 38. For the 

 sheep's brain, see Fig. 10. Similar views of the human brain 



corpus pineale 

 commissura posterior 

 collicylus superior 



/ habenula 



com. hah, / plexus dim 

 /// ^ 



/ // /fissura ansata 

 ' ' (cruciata) 

 t M. 



lamina 



culmen monticul 

 sulcus pnmariu 

 declive monticuli 



pyramis 



fissura secu 

 uvula 



re cat 



\^ com. ant 

 \^ lamina term, 

 rec. preop. 



FIG. 10. Median section of the brain of the sheep. Slightly reduced. 

 The exposed ventricular surfaces are stippled. Aq.S., aqueductus cerebri 

 (Sylvii); area olf.med., area olfactoria medialis or nucleus olfactorius 

 medialis; b.ol., bulbus olfactorius; can.cen., central canal of spinal cord; 

 ch., chiasma opticum; c.mam., corpus mamillare; col.forn., columna fornicis; 

 com.ant., commissura anterior; com.hab., commissura habenularurn ; 

 c.trap., corpus trapezoideum ; f.M., foramen interventriculare (Monroi); 

 Q.i., gyrus intermedius; g.marg.ant., gyrus marginalis anterior; g.marg. 

 post., gyrus marginalis posterior; hyp., hypophysis; inf., infundibulum; 

 lamina term., lamina terminalis; med.obl., medulla oblongata; m.i., massa 

 intermedia; ped.cer., pedunculus cerebri; plexus ch.III, plexus chorioideus 

 ventriculi tertii; plexus ch.IV. plexus chorioideus ventriculi quarti; r.c.cal., 

 rostrum corporis callosi; rec.cb., recessus cerebelli; rec.preop., recessus pre- 

 opticus; s.pol., sulcus parolfactorius; stria med.thal., stria medullaris thalami; 

 t.ol., tuberculum olfactorium (intermediate olfactory nucleus); vel.med.ant., 

 velum medullare anterius; v.III, ventriculus tertius. 



are pictured by Cunningham ('15), Fig. 477, p. 542; Gray 

 ('18), Figs. 715, 720; Quain ('09), Fig. 132, p. Ill; Rauber- 

 Kopsch ('12), Fig. 95, p. 77, Fig. 97, p. 81; Sobotta ('11), 

 Fig. 648; Spalteholz ('09), Figs. 694, 695, pp. 625, 626; Toldt 

 ('04), Figs. 1193-1195, pp. 776, 777. 



