The NERVOUS SYSTEM __________________ & __________________ Nervous System.
Nervous system
-
Upload
janene-avery -
Category
Documents
-
view
30 -
download
0
Transcript of Nervous system
WHAT IS THE NERVOUS SYSTEM?
Your nervous system is the control and
communication system of the body. Its job is to send
and receive messages. Your nervous system controls
all your thoughts and movements.
NEURONS
The cells that make up the
nervous system are called
neurons. Long, stringy neurons
are perfect for carrying the
electrical messages that are the
"language" of the nervous system.
BRAIN
The brain is the command center of
your entire body. The brain is the
body's main information center. It is
made of billions of neurons. The brain
helps the body respond to the
information it receives from the senses.
The brain also processes thoughts.
When you think, neurons in your brain
are working.
SPINAL CORD
• The spinal cord is a tube of neurons that runs up the spine and attaches to the brain stem. Information from nerves that branch out to the rest of the body goes to the spinal cord. Some messages are processed by the spinal cord but most information is sent on to the brain.
ALZHEIMER'S DISEASE
• Disease of the nervous system marked by a deterioration of memory, thinking, and reasoning.
CARPAL TUNNEL SYNDROME
Disorder caused by the
compression at the wrist of the
median nerve supplying the hand,
causing numbness and tingling.
EPILEPSY
Disorder of the nervous
system marked by seizures
that often involve convulsions
or the loss of consciousness.
HUNTINGTON'S DISEASE
Inherited, progressive
disease causing uncontrollable
physical movements and
mental deterioration.
POLIOMYELITIS
Contagious viral disease that can
cause damage to the central
nervous system, resulting in
paralysis and loss of muscle tissue.
If the nervous system becomes damaged it could
become a major or a minor problem, depending
whether it is your central or peripheral nervous
system that is damaged
If your peripheral nervous system is damaged,
there is a good chance it isn’t fatal. Damage to your
peripheral nervous system means that the nerves
have been cut from that area and messages cannot
be received by that part of the body. There are
hundreds of peripheral nerve disorders that can
effect one, or many nerves. They can be as extreme
as
carpal tunnel syndrome or as moderate as diabetic n
erve problems. Symptoms of peripheral nerve disord
ers include:
Your brain is the main organ of your body
which is why it is a part of the central
nervous system. Without the nervous system
we wouldn’t be able to move, function or
think, this is because the nervous system is
what makes everything in your body work.
Think of the brain as the main computing system that controls
what goes on with the other computers and the nerves are the
network that relays messages from one body part to another. If one
of the networks were to break, no messages would be able to be
sent to that area of the body therefore that organ or limb is useless.
Then imagine the main computing system shuts down. The body is
now brain-dead as the nerves have no main system to get their
messages from. This is why the central nervous system (the brain
and the spinal cord) is covered by bone, to protect it from harm.