The brain stem connects the brain along with the spinal cord. It controls hunger and thirst and some of the most important body functions, those are the body temperature, blood pressure, and breathing. The brain and spinal cord are called as the central nervous system (CNS). The brain is the command midpoint for your body, and the spinal cord is the pathway for information sent by the brain to the body and from the body to the brain. Meninges are membranes that protect the brain and spinal cord. There are three layers of meninges: Dura mater (closest to the bone), Arachnoid loosely around the brain, Pia mater is closely attached to the brain and spinal cord surface. Cerebrospinal Fluid (CSF) cushions the brain and spinal cord.