(I)The brain, which controls the rest of the body and undertakes thought is composed of three main parts. (II) Thus the human brain is unique among other species of animals with its ability to think. (III)Located .in the head, it is protected by the bones of the skull. (IV) The cerebrum is the folded, outer part of each half of the brain, governing thought, the senses and the movement. (V)The cerebellum controls balance and muscle coordination.