The Nervous System
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Transcript The Nervous System
The Nervous System
Communication & Coordination
Functions of the Nervorus
System
Communicate Information: From the outside
world into the body and from within the body
Coordinate Activity: Controls all of your
body’s functions, both voluntary and
involuntary
Process
1. Sense organs (eyes,
ears, mouth, nose, skin)
bring in info to the brain
2. Other organs in the
body send info to the brain
3. Brain processes
information
4. Brain sends message
for any activity
ALL MESSAGING
is performed by neurons,
chemicals and electricity
Autonomic Nervous System
This controls all automatic, involuntary
functions such as body temperature control,
heart beat, and breathing
HAS TWO divisions, the SYMPATHETIC
and the PARASYMPATHETIC
Sympathetic Nervous System
In response to information, this system gets the
body ready for FIGHT or FLIGHT
Pupils dialate
Heart Rate increases as blood pressure increases
Blood moves from organs to limbs in preparation for
activity
Endorphins are released
Parasympathetic Nervous
System
This system restores equilibrium to the body
and reverses the amping up the actions of
the sympathetic Nervous System
Somatic Nervous System
This part of your nervous system controls
ALL voluntary functions
Actions you initiate
Running
or Scratching an itch
Dancing, drawing, playing an instrument
Doing CPR
Interesting Facts
Meningitis- a serious illness caused by a
virus or bacteria in your meingies.
Symptoms include high fever, aches, and
head aches.
Spinal injury-severed or damaged nerve
signals are not delivered past that point.