Structure Of Nervous System Central nervous system Peripheral nervous system Central nervous system ? Brain- cerebrum control voluntary muscle, perception and thinking ? Cerebellum- controls many involuntary body movements ? Brain stem- control breathing, heart rate, blood pressure. ? Spinal cord Structure of the peripheral nervous system Nerves transfers command rom CNS to muscles and glands Cranial nerves extend from brain through holes in cranial muscles Three types of nervous ? Sensory nerves- carry signals towards the CNS