Mammalia: Nervous System 



705 



Fig. 522. Sagittal section of the brain of a calf, (a) Aqueduct; (ac) anterior 

 commissure; (cc) corpus callosum; (/) fornix; (h) habenula; (hy) hypophysis; (i) 

 infundibulum; {im) intermediate mass ("soft commissure"); (It) lamina terminalis; 

 (mb) mammillary body; (ob) olfactory bulb; (oc) optic chiasma; (ol) optic lobes; 

 (p) pinealis; (r) recessus suprapinealis; (s) septum pellucidurn; (III, IV) third and 

 fourth ventricles. (After Butschli. Courtesy, Kingsley: "Comparative Anatomy 

 of Vertebrates," Philadelphia, The Blakiston Company.) 



Fig. 523. The human brain in sagittal section. Since the plane of section passes 

 between the two cerebral hemispheres, the figure shows the left (medial) surface 

 of the right hemisphere. (After Sobotta. Courtesy, Neal and Rand: "Chordate 

 Anatomy," Philadelphia, The Blakiston Company.) 



