 Central Nervous System (CNS)  Peripheral Nervous System (PNS)

 Consists of:  Brain  Spinal Cord

 Cerebrum  Cerebellum  Brain Stem

 Coordinates:  Thinking and learning  Creativity  Five senses  Memory and Emotion  Problem-Solving  Decisions

 Stores and processes memories  Helps find memories  Affects emotions

 Receives messages from most of the muscles in your body  Communicates with the other parts of the brain  Sends messages about movement and balance back to your body  Coordinates  Most muscles  Movement  Learned Skills

 Coordinates  Heartbeat  Breathing  Digestion  Swallowing  Blinking

 Bundle of nerves that carries messages between the brain and the rest of the body  Long tube of nerve tissue running from the brain down the length of the back inside of the spine

 Somatic Nervous System  Sensory nerves  Motor nerves  Messages between brain and body  CONTROLS VOLUNTARY MUSCLES  Autonomic Nervous System  Controls organs and some muscles  CONTROLS INVOLUNTARY MUSCLES

 Parts  Soma  Dendrites  Axon  Carries messages  Called impulses

 Small space across which an impulse moves from an axon to the dendrites or cell body of another neuron

 Stimulus (stimuli)  Anything that the body can react or respond to  May be internal or external  Response  The reaction to the stimuli