Nervous System

• Central nervous system


  Part of the nervous system made up of the brain and the spinal chord
• Peripheral nervous system


  Part of the nervous system made up of the somatic and autonomic (sympathetic and parasympathetic) nervous systems
• Somatic nervous system


  PNS that works with nerves. Lets us sense things from the outside
• Autonomic nervous system


  PNS that controls blinking, breathing, having your organs moving
• Sympathetic system


  Increases heart rate, dilates pupils, "fight or flight"
• Parasympathetic system


  Decreases heart rate, allows you to calm down once you've been in fight or flight mode