Sagitally cut model of a human brain. It shows the medial surface of the right hemisphere, the dorsal cerebellum is on the right side of the picture. Well visible is the winding structure (gyri) of the cerebral cortex and of the cerebellum. The central white area, is the sagittal cut so-called "corpus callosum" that functionally and anatomically connects the two brain halfs. On the bottom, in blue: The pituitary gland.