THE NERVOUS SYSTEM

BY Kayla Lowery

MAJOR FUNCTIONS!

SOME OF THE MAIN FUNCTIONS OF THE CENTRAL NERVOUS

SYSTEM AND THE PERIPHERAL SYSTEM ARE:

To control movement of the body based on sensory

information

To send appropriate impulses to the muscles and glands

The peripheral system connect the central nervous

system to the limbs and organs.

MAJOR PARTS!

There are three parts of the nervous system: the

central nervous system (CNS), the peripheral nervous

system (PNS), and the autonomic nervous system (ANS).

CNS includes the brain and spinal cord.

PNS is made up of all body nerves that are outside of

the CNS.

ANS controls involuntary actions of the bodily organs.

DIAGRAM

PATH OF THE NERVE IMPULSE

It begins with a stimulus. Noted by a sensory

receptor, so it alerts a sensory neuron. The nerve

impulse reaches the central nervous system (CNS)

where it is directed to the motor neuron. From there it

goes to the muscle and finally there is a response.

HOW DOES IT WORK WITH OTHERS?

The nervous must interact with all the body systems in a human.

It sends signals to the brain to help other systems function.

In the skeletal system bones provide calcium that is essential for

proper function of the nervous system

The brain (part of the nervous system) monitors respiratory

volume and blood gas levels

The autonomic nervous system controls the tone of the digestive

tract.

FOUR INTERESTING FACTS!

There are more nerve cells in the human body than

there are stars in the sky

A newborn baby’s brain grows almost three times during

the course of the first year

An average adult male brain weighs about 1,375 pounds

The nervous system can transmit impulses as fast as

100mph

THE END