Brain. Computer-coloured illustration of a human head in side view, sectioned to show the brain and its blood vessels. The face is at right; cavities (pink) of the nose, mouth and pharynx are seen. Cerebral blood vessels (at top) branch within the cerebrum (yellow) of the brain. The large cerebrum of the brain is responsible for memory, conscious thought and voluntary movement. The cerebellum is a tree-shaped structure (blue/pink) at ear level. At the top of the yellow spinal cord is a swelling that forms the brainstem responsible for primitive reflexes. Illustration by the Italian anatomist Paolo Mascagni (1755-1815), author of the famous treatise: Vasorum Lymphaticorum Corporis Humani"."