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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.
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