7/19/2009
1
Muscles
Bones and muscles work together
to provide a structural framework
for movement.
Like a machine, your body consists of
many parts that move.
•Those parts are your
bones and muscles.
Muscle Action - Voluntary
•Voluntary means that
you can control it.
•Most of the time,
skeletal muscles are
skeletal
muscles
are
involved in voluntary
muscle movement.
•When you lift an
object, it is voluntary.
Muscle Action – Involuntary
•Involuntary means you do not control the
movement.
•The beating of your heart and movement of
your digestive tract are both examples of in
your
digestive
tract
are
both
examples
of
in
voluntary muscle action.
You can voluntarily blink your eyes;
however, sometimes blinking your eyes
is involuntary.
The major function of the muscular
system is to move bones.
•Muscles and bones work in coordination
with your nervous system to move your
b
od
y
on demand.
y
•The muscular system also provides support
and protection for your organs.
