My Muscular System

1
My Muscular System

• My muscles move my body
• like strings move a puppet.

2
The muscular system is made up of

• muscles
• and
• tendons

3
How many muscles do I have?

• I have about 650 muscles in my body.
• My muscles make up half of my body weight.
• ??? How much do your muscles weigh?

4
My muscles are important because they

• Hold my organs in place
• Hold my bones together so that I can move
• Help me chew my food
• Open and close my eyelids
• Pump my blood
• Allow me to run and play
• Help me to smile!

5
Did you know?????

• It takes more muscles to
• frown
• than to
• smile?

6
What are muscles made of?

• Stretchy, elastic cells and fibers
• What else is stretchy like a muscle?

7
Why do I need tendons?

• Tendons attach my muscles to my bone helping my
  body move.
• Feel your tendon right above your heel in
  the back of your leg.
• This is the thickest tendon in your body.

Try This...
8
One way to keep my muscles strong

• Eat foods from the meat group every day. They
  are high in protein which helps to build strong
  muscles.
• Name some foods that are high in protein.

9
Another way to keep strong muscles

• Exercise every day.
• What are some things you can do every day to help
  keep your muscular system healthy?

10
There are 2 types of muscles

• Voluntary- Muscles that you can control
• What are some examples?
• Involuntary- Muscles that you can not control
• What are some examples?

11
3 types of muscle tissue

• Muscles are made of tissues. There are 3
  different types of muscle tissue
• Skeletal- attaches to bones and allows movement
• Cardiac- is found only in the heart
• Smooth- is found in internal organs

12
Flexors vs. Extensors

• Some muscles bend joints, while some muscles
  straiten joints.
• Flexors are muscles that flex.
• Extensors are muscles that extend.