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MUSCLES
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The human body
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Did anyone watch any sporting event
this past week?
Does anyone go to dance classes,
karate or any other athletic event?
Did anyone have a game this week or
weekend that they played in?
Before you start any activity, what
should you do first??
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STRETCH
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Why should we stretch?
?
? ?
? ? ?
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What are some of the things that
we use our muscles for?
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• Talking
• Digesting
• Walking
• Coloring
• Breathing
• Riding bikes
• Smiling
• Blinking
• Eating
• Sneezing
• Studying
• Raising your hand
• Driving
• Swimming
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About how
many
muscles do
you think the
human body
has?
Answer =
650
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We have muscles all over our body!
Legs
Face
Tongue
Eyes
Hands
Arms
Heart
Ears
Neck
Stomach
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How many muscles do
you think are in our face
and neck?
Our face and neck
contain about onefourth of the muscles
in our body.
That is about 162
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muscles.
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It takes 17 muscles to smile and
43 muscles to frown
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What are muscles made of?
Muscles are made of hundreds of

tiny fibers.
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Can you feel some of your
muscles?
Hold your arms out in front of you.
Where in your arm do you feel the
muscles move?
Move your neck from left to right and
up and down. What do you feel?
Move your fingers around. Where do
you feel those muscles move?
Stand on your toes. Do you feel the
muscles in the back of your legs?
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What do muscles need?
 Muscles need oxygen in order to
work properly.
 When they do not get enough
oxygen, they can get sore or cramp
up.
 When the muscles in your heart
do not get enough oxygen, you can
have a heart attack.
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Yes - Muscles make up about
half of your body weight.
If Jackie weighed 158 lbs, about how many
pounds did her muscles weigh??
158
2=N
158 / 2 = 79
N = 79
Jackie’s muscles weighed about
79 pounds.
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Do muscles pull or push our bones?
•Muscles pull in order to make our
bones move.
•Our muscles usually work in pairs.
•One muscle contracts (pulls) while
the opposite muscle relaxes
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•Your bicep is
relaxed
•Your Tricep is
contracted
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3 Types of muscles
There are three different types of
muscle in our body.
Skeletal muscles
 Smooth muscles
 Cardiac muscles
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•Are voluntary muscles that
move bones.
•Are called striated because
they look striped
•Are attached to tendons,
which are attached to bones.
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Tendons are tough cords that
attach muscles to bones.
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•Are involuntary muscles that make
up the blood vessels, stomach,
intestines, and other groups
• We can not control our smooth
muscles
•What are some example of when our
smooth muscles are used?
To digest food, pump blood,vomit,
control bladder, and give birth
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•A special kind of involuntary,
striated (striped) muscle that
makes up the heart.
•The muscles in the heart
contract in order to pump the
blood through your body.
•If your muscle stops pumping
the blood, you have a heart
attack.
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3 types of muscle
Smooth
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Cardiac
Skeletal
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The cardiac muscles in
your heart cause it to
beat between 70 and 80
times per minute.
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What happens when we do
not use our muscles?
Our muscles get smaller,
which makes them weak.
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It is very important for us to take
very good care of our bodies. We
need to eat healthy foods and
exercise our muscles regularly.
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Let’s Recap!
Check it out!
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