1. The Nervous System

2. A system that controls all of the activities of the body.
Nervous System
A system that controls all of the activities of the body.
The nervous system is made of:
The spinal cord
The brain
The nerves
The senses

3. Central Nervous System Peripheral Nervous System (PNS)
The Nervous System
2 functions:
Central Nervous System
Brain
Spinal Cord
Peripheral Nervous System (PNS)
Pathways for Sensory Neurons
Pathways for Motor Neurons
Somatic System
Controls skeletal muscles
Autonomic System
Controls internal organ muscles
1. To collect information and decide what it means
2. Respond to information collected
Take in and respond
To messages from PNS
Connects all parts of the body through neurons to the CNS
Controls voluntary movements like walking and talking
Controls involuntary movement like digestion and respiration muscles

4. The Central Nervous System is made of the brain and the spinal cord.
The Central Nervous System controls everything in the body.

5. The nervous system also allows you to react to a stimulus.
A stimulus is a change in the environment.
Example: A hot stove
Or… tripping over a rock

6. *The spinal cord sends messages to the brain.
*The spinal is the part of the nervous system that connects the brain to the rest of the nervous system

7. *The brain controls everything in the body.
*The brain is made of more than 10 billion nerves!
* The brain is divided into three parts and is protected by the skull.

8. The Three Parts of the Brain
* The Brain has three main parts…
1. The Cerebrum
2. The Cerebellum
3. The Brain Stem

9. * The Cerebrum is the largest part of the brain.
1. The cerebrum controls your thinking.
2. The cerebrum controls your memory.
3. The cerebrum controls your speaking.
4. The cerebrum controls your movement and identifies the information gathered by your sense organs.

10. The Two Hemispheres The Cerebrum is divided into two parts.
The left and right hemisphere

11. Right versus left Cerebrum

12. The cerebellum is below and to the back of the cerebrum. It controls:
* Your balance
* Your Posture

14. The Brain Stem connects the brain to the spinal cord.
or Medulla
The Brain Stem connects the brain to the spinal cord.
The nerves in the brain stem control
your heartbeat
breathing
and blood pressure

15. The Vertebrae
* The vertebrae are the many bones that protect the nerves in the spinal cord.

16. What is the difference in the brains of different celled organism?
Talk to your partner and make a list

17. From Brain Stem to Cerebrum

18. The real thing

19. Sign onto QUIA using your sign on
Play the games - use your Period Link on my website. You need to play at least 20 minutes. If you don’t finish today then complete for homework

20. Infrared Tools to Study the brain . . . .