The Muscular System

Without them we would be a big blob!

By: Clara Carroll

MUSCLES• Muscles are made of the same material.

Muscles are made of an elastic tissue, like

a rubber band.

• There are tons of muscles in your body.

There are about 700 skeletal muscles in

your body!

• About 2/5 of our body weight is muscles.

Types of Muscles

• There are three kinds of muscles:

– Voluntary muscles

– Smooth muscles

– Cardiac muscles

Voluntary Muscles • Voluntary muscles are also

called skeletal muscles.

• Move bones

• made up of a group of

muscle tissues bound

together.

• look like rodlike cells lined

up parallel to each other.

• Voluntary muscles are

muscles we can control.

Smooth Muscles • Smooth muscles are also called

involuntary muscles.

• Contract slowly and move substances

through the organs they surround.

• Thin layers or sheets with one layer

over the other.

• Smooth muscles you can’t control.

• Are usually found in the stomach,

small intestine, and other hollow

organs like the bladder.

Cardiac Muscles

• Cardiac muscles form the

wall of the heart.

• Their purpose is to pump

blood.

• Have to work together.

• Cardiac muscles has a Y-

shaped interwoven cells.

• Cardiac muscles are muscle

you can’t control.

Muscles and Bones

Muscles are

everywhere in your

body. Most muscles

are connected to

bones. Voluntary

muscles are attached

to bones by the

muscles' tendons.

Face Muscles

• Many muscles in the

face are not attached

to bones, but to each

other or the skin.

• There are over 40

muscles in your face.

Face muscles

• We also use our

muscles to eat,

speak, and blink.

• We use face

muscles to make

different

expressions.

The Biggest Muscle• Your biggest

muscle is the

Gluteus

Maximus, also

known as your

rear end.

• It helps keep us

standing

upright.

Smallest Muscle

The smallest muscle

in our body is the

strapedius muscle.

It is located in the

ear, and helps filter

out loud noises from

the ear.

Hardest Working Muscle

• The hardest

working muscle

is the heart.

• pumps about 2

oz. of blood

every

heartbeat.

How to make your muscles stronger.

• To keep your body

healthy, you should eat

good foods and

exercise.

• You can exercise your

body by jogging or

riding your bike.

Conclusion

• Muscles are an important part of our

life.

• We wouldn't be able to do anything.

We would just be a big blob.