2. The Nervous System Communication & Coordination

3. Functions of the Nervorus System  Communicate Information: From the outside world into the body and from within the body  Coordinate Activity: Controls all of your body’s functions, both voluntary and involuntary

4. Process  1. Sense organs (eyes, ears, mouth, nose, skin) bring in info to the brain  2. Other organs in the body send info to the brain  3. Brain processes information  4. Brain sends message for any activity

5. ALL MESSAGING is performed by neurons, chemicals and electricity

6. Autonomic Nervous System  This controls all automatic, involuntary functions such as body temperature control, heart beat, and breathing  HAS TWO divisions, the SYMPATHETIC and the PARASYMPATHETIC

7. Sympathetic Nervous System  In response to information, this system gets the body ready for FIGHT or FLIGHT  Pupils dialate  Heart Rate increases as blood pressure increases  Blood moves from organs to limbs in preparation for activity  Endorphins are released

8. Parasympathetic Nervous System  This system restores equilibrium to the body and reverses the amping up the actions of the sympathetic Nervous System

9. Somatic Nervous System TTTThis part of your nervous system controls ALL voluntary functions AAAActions you initiate RRRRunning or Scratching an itch DDDDancing, drawing, playing an instrument DDDDoing CPR

10. Interesting Facts  Meningitis- a serious illness caused by a virus or bacteria in your meingies. Symptoms include high fever, aches, and head aches.  Spinal injury-severed or damaged nerve signals are not delivered past that point.