ABSTRACT
THE BRAIN: WHERE IT ALL STARTS Th e brain is truly magnifi cent. It is this structure that underlies our conscious experience. It regulates homeostatic body functions like heartbeat, movement, and most all the other abilities we will discus, including emotion and thinking. Th e fact that it can do this and only be the size of a melon is even more amazing. A brain in any vertebrate animal is the coordinative center of the nervous system, which consists also of nerves that feed sensory information to it from the body and world and motor and other commands away from it to muscles and glands.
