The Central Nervous System, or CNS, consists of the brain and spinal cord. That sounds simple, but in reality the CNS consist of a complex connection of many sub-components, each responsible for a wide variety of activities in your body. The brain itself can be divided into many regions. These are often categorized into three main parts: the cerebrum, the cerebellum, and the brain stem. The cerebrum can be further subdivided into the: frontal lobe, occipital lobe, parietal lobe, temporal lobe, right hemisphere, left hemisphere, and corpus callosum. The cerebrum is involved in a wide variety of functions such as: movement both conscious and autonomic; sensory processing including vision, hearing and smell; language and communication; and, learning and memory. Brain Development: Although most of a child's brain cells are formed before birth, most of the interconnections among these cells are made during infancy and early childhood. Many factors influence the development of a child's brain. These include both physiological and psychological factors. Some factors are outside of our control, such as good genetics. However, most factors for brain development are within our control, such as good food and nutrition, parental love and nurturing, physical activity and diverse experiences. Experiences in all five senses are critical to fully develop all functions of the brain. Seeing, hearing, touching, smelling, and tasting all help create neural connections important to brain development. Sensory experiences lay out neural circuits in the brain. Continued reinforcement of these circuits creates patterns in the brain that help a child form thoughts, habits, memories and an overall sense of consciousness.