MUSCULAR SYSTEM

The muscular system is made up of…

• Muscles

• Tendons

How many muscles do we have?How many muscles do we have?

We have about 650 muscles in our body.

Our muscles make up half of our body weight.

Muscles are important because Muscles are important because they…they…

Hold organs in placeHold bones together so that we

can moveHelp us chews foodOpen and close our eyelidsPump our bloodAllow us to run and playHelp us to smile!

What are muscles made of?What are muscles made of?

Stretchy, elastic cells and fibers

What else is stretchy like a muscle?

GROUPS OF MUSCLE:

INVOLUNTARYINVOLUNTARY- MOVES ON OWN.WE DON’T HAVE TO THINK ABOUT IT. 2 TYPES

VOLUNTARYVOLUNTARY- WE MUST THINK ABOUT THE ACTION TO GET THE MOVEMENT.1 TYPE

CARDIAC MUSCLE

INVOLUNTARYINVOLUNTARY-works by self

Striated Doesn’t tire Built-in rhythm heart

SMOOTH MUSCLE

INVOLUNTARYINVOLUNTARY• Flat• Smooth• Lines hollow organs• Works with us directing them.

SKELETAL MUSCLEVOLUNTARYVOLUNTARY

Striated Easily tires Attaches to bone for movement

TENDONS

• Connective tissue that attaches muscle to bone.

Why do we need tendons?Why do we need tendons?

Tendons attach my muscles to my bone helping my body move.

Try This: Feel your tendon right above your heel in the back of your leg.

This is the thickest tendon in your body.

Did you know?????Did you know?????

It takes more muscles to frown than to smile?

One way to keep my muscles One way to keep my muscles strong…strong…

Eat foods from the meat

group every day. They are

high in protein which helps

to build strong muscles.

Another way to keep strong Another way to keep strong muscles…muscles…

Exercise every day.