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Locomotion
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Aim What are the three types of muscles in the
human body?
I. Human Muscles
A. Three types
1. Skeletal Muscle

1. Controlled by somatic nervous system (remember?)
2. Moves the bones of the skeleton
3. Skeletal Muscle tissue has striations
4. Voluntary

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Skeletal Muscle
striations
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e. Skeletal muscles work in opposing pairs when
one contracts, the other relaxes. Ex bicep and
tricep.
Opposing pairs
Pierre, what are the opposing muscles to the
chest muscles?
Yes!!! The back muscles are the opposing muscles
to the chest muscles!! Good job Pierre!
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f. Muscles that bend joints are called flexors.
Muscles that cause the joints to straighten out
are called extensors.
Flexor Extensor Demo
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2. Visceral Muscle (smooth muscle)

1. Controlled by autonomic nervous system
2. Controls organs of the body (muscles in the
   digestive tract, blood vessels)
3. Has no striations (smooth in appearance)
4. Involuntary

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3. Cardiac Muscle (Heart muscle)

1. Controlled by autonomic nervous system
2. Controls heartbeat
3. Has striations
4. Involuntary

striations
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B. Connective Tissue

1. Ligament (LBB) connects bone to bone.
2. Tendon (TMB) connects muscle to bone.

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Review Questions
Q. What are the three types of muscles?
LUUUUUKE!! Show us what you know. Come on up to
the board.
Nice job Luke although you needed a little help
from the class. Yes the three muscles are
skeletal, visceral, and cardiac.
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Q. Which muscles have striations?
Oh? OK Kristen you want to answer this one?
Go to it.
That is correct! Both skeletal and cardiac
muscle show striations.
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One more...
Q. What is meant by opposing muscles?
This is all you Mikey Fresh!
That is correct Mike!! Opposing muscles work in
pairs while one contracts the other one relaxes.