1. By: Kelly, Shania, Derek, Travis, and Cormac
Nervous System
By: Kelly, Shania, Derek, Travis, and Cormac

2. What is the nervous system?
The nervous system coordinates and controls all organs; detects, responds and processes stimuli
Only one nervous tissue makes up the nervous system
Nervous tissue: tissue of the brain, spinal chord and nerves
Remember: The nervous tissue make up the nervous system

3. Neurons and Dendrites
Neurons: cells that receive and transmit information
Dendrites: small branches of the cell
This is where the neuron receives messages from
Axon: a long extension of the cell that ends in small branches
It transmits information to neighboring cells
(Diagram of the neurons and the path on page 147)
Neurons

4. Central and Peripheral Nervous System
2 of the most important divisions in the nervous system are the central and peripheral nervous system
Central nervous system includes your brain and spinal cord
Peripheral nervous system is made up of the head and spinal cord
MRI of brain

5. Peripheral Nervous System
There are two types of neurons in the peripheral nervous system:
Sensory neurons carry information from the body to the central nervous system
Motor neurons carry information from the central nervous system to the muscles or organs
Somatic Nervous System: voluntary responses
Autonomic Nervous System: automatic responses

6. Central Nervous System- The Brain
The brain is divided into 3 main sections:
The cerebrum is the largest part of the brain
The medulla is the innermost part of the brain
The cerebellum is a part of the brain in the back of the head
Interneuron: connects one neuron to another
(Diagram of what each part of the brain does on page 148)
Reflex: automatic response by the nervous system

7. Fun Facts About the Nervous System!
There are more nerve cells in the human body than the stars in the Milky Way
If we lined up all the neurons in our body, it would be around 600 miles long
There are 100 billion neurons in your brain alone!
Neurons are the largest cells in the human body.