Download Nervous System

By: Alexandria J
Max M
Imanol S
Detects information from the environment and controls body functions.
MAJOR PARTS
Brain:
cerebrum, interprets input from the senses, controls movement, and carries out complex mental processes such as learning
and remembering.
Cerebellum:
Coordinates the actions of your muscles and helps you keep your balance.
Brain stem:
Lies between the cerebellum and the spinal cord, controls your body’s involuntary actions those that occur automatically
Spinal Cord:
The spinal cord is the link between your brain and the peripheral nervous system.
Peripheral Nervous system:
Consist of a network of nerves that branch out from the central nervous system and connect it to the rest of the body
Nerves:
A bundle of fibers that transmits impulses of sensation to the brain or spinal cord, and impulses from these to the muscles
and organs
Neurons:
Specialized to carry messages through an electrochemical process, in the human brain it has more than 100 billion neurons.
THE PATHWAY A NERVE IMPULSE
TRAVELS THROUGH THE BODY
It begins in the dendrites, moves rapidly towards the neurons cells body, and
then down the axon until it reaches the axon tips. It travels along the neuron
in the form of electricity.
HOW THE NERVOUS SYSTEM
WORKS WITH OTHERS
By sending commands to the other, and receiving information back from
them.
There are more nerve cells in the human brain than there are stars in the
Milky Way
If we lined up all the neuron in our body, it would be 600 miles long.
There are 100 billion neurons in your brain alone.
As we get older, there brain loses almost one gram a year.