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MUSCLES

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The human body

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Did anyone see the Jets play on Sunday?

Before you start any activity, what should you do first??

Did anyone have a game this weekend that they played in?

Does anyone go to dance classes or karate?

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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?

• Talking

• Walking

• Breathing

• Smiling

• Eating

• Studying

• Driving

• Digesting

• Coloring

• Riding bikes

• Blinking

• Sneezing

• Raising your hand

• Swimming

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About how many

muscles do you think the human body

has?

Answer = 650

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Where do we have muscles?

We have muscles all over our body! Face

TongueEyes

Legs

ArmsHeart

HandsEars

NeckStomach

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How many muscles do you think are in our

face and neck?Our face and neck contain about one-

fourth of the muscles in our body.

That is about 162

muscles.

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Smile or Frown?It takes 17 muscles to smile and

43 muscles to frown                                

What conclusion can we make from these two statements?

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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 a book 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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Muscles, Muscles, Muscles

                                                                                                        

 

                                  

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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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Are muscles dense? 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 about79 pounds.

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How do muscles move our bones?

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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When your arm is straight:

•Your bicep is relaxed

•Your Tricep is contracted

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When you arm is bent:

•Your bicep is contracted

•Your tricep is relaxed

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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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Skeletal muscles•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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Skeletal Muscle

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TendonsTendons are tough cords that

attach muscles to bones.

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Smooth Muscles•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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Smooth Muscle

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Cardiac Muscle•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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Cardiac Muscle

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3 types of muscle

Smooth Cardiac Skeletal

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How many times a minute do you think

your heart beats?

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.

Can you think of some examples of when this may

happen?

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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.