General Organization. The cerebral cortex is the outer covering of gray matter over the hemispheres. This is typically 2- 3 mm thick, covering the gyri and sulci. Certain cortical regions have somewhat simpler functions, termed the primary cortices.eneral Organization. The cerebral cortex is the outer covering of gray matter over the hemispheres. This is typically 2- 3 mm thick, covering the gyri and sulci. Certain cortical regions have somewhat simpler functions, termed the primary cortices.
Neanderthals were shorter than modern man, with longer skulls, jutting brows and chins, and had large torsos with short limbs. They were not adapted for running and hunting in the same way as Cro-Magnon.
Homo neanderthalensis (250,000 to 30,000 years ago). Species Description: Like H. erectus, H. neanderthalensis had a protruding jaw, receding forehead, and weak chin. The average Neanderthal brain was slightly larger than that of modern humans, but this is probably correlated with larger body size in general.omo neanderthalensis (250,000 to 30,000 years ago). Species Description: Like H. erectus, H. neanderthalensis had a protruding jaw, receding forehead, and weak chin. The average Neanderthal brain was slightly larger than that of modern humans, but this is probably correlated with larger body size in general.