Canine Brain Section

The telencephalon is shown in this transverse section through a canine brain. Cerebral cortex forms surface gray matter while deep gray matter constitutes basal nuclei (caudate nucleus, putamen, globus pallidus, etc.). White matter (stained blue) is deep to the cortex. Notice the white matter commissure (corpus callosum) passing between the two hemispheres. White mater squeezed between basal ganglia is called internal capsule. The lateral ventricle is bounded laterally by caudate nucleus, dorsally by corpus callosum, and medially by the septal region (septum).