1. Nervous System
The control and communication center of your body.

2. Answer the following question:
How come when you play softball, you know when to raise your hand to catch the ball?
How do you know when the ball has arrived to your mitt?
We will share in a moment.

3. Neurons
As you read and hear this PowerPoint, the neurons in your ears and eyes send messages to your brain to understand them.
These neurons are also called nerve cells.
Neurons are the language of the nervous system.

4. 3 Types of Neurons Sensory – receive info from outside world
Motor – send messages to the muscles
Connecting – passes info between sensory and motor
Examples?

5. Connecting Info
You receive a pass from a teammate in a basketball game.
The pass was complete and hits your hands.
Sensory neurons signal your brain and spinal cord that the ball has arrived.
The brain and spinal cord translate that message
Nervous system tells your body to “hold hands tight”.
Motor neurons tell muscles to “hold on tight”.

6. Two Systems Central – brain and spinal cord
Peripheral – nerves that branch out from the Central System.

8. 3 Parts of the Brain
Cerebrum – largest, controls memory, language and thoughts
Cerebellum – voluntary muscle movements
Brain Stem – control involuntary muscle movement
what are some examples?

9. Brain Stem
Eye Pupils
Digestion
Heart Beat
Breathing

10. Care for your Nervous System
Balanced Nutrition
Rest
Avoid Drugs
Avoid Alcohol
Exercise

11. Preventing Injury Wear a helmet Fasten seatbelts
Don’t lift heavy objects
Use common sense

12. Small Group Discussion Questions
Compare and contrast the Central Nervous System and the Peripheral Nervous System.
Explain why a teenage brain loses 40 percent of its connections during puberty.
Explain why teenagers are more likely to engage in risky behavior than adults.
Describe several strategies Russell Wilson (Seahawks Quarterback)uses to protect his Nervous System.