bones, muscles, joints, and coordinaton!. bones! what are the three functions of bones? –support...

Bones, Muscles, Joints, and Coordinaton!

Bones!

• What are the three functions of bones?

–Support

–Movement

–Protection

Bones!

• There are about…..

206bones in the human body!

Bones Throughout Life

Bones in the skull FUSE or GROW TOGETHER as you grow to protect the brain, eyes, and inner ears.

Bones get WEAKER as we get older.

Joints!

What is a joint?

The place where two bones meet and bend!

There are 3 kinds of joints….

Can you name all 3?

1. Hinge 2. Gliding 3. Ball and Socket

Joints!

Hinge Joints…

move in 1 direction (open/close)

Examples:

• Knee

• Fingers

• Toes

• Elbow

Gliding Joints

Gliding joints….

move in 2 directions

Examples: Spine

Wrist

Ankle

Ball and Socket Joints

Ball and Socket Joints….move 3 different ways…..

• Forward/Backwards• Sideways• Rotates

Examples: Shoulder

Hip

Muscles!

Muscles power all movement.

Muscles CONTRACT or SHORTEN to

PULL bones, making them move.

Our Amazing Thumbs!

Our thumbs are……

opposable

Coordination!

How does our body send messages or signals?

What are the 3 steps?

Coordination

FirstThere is a STIMULUS

that we sense through

one of our senses

or a thought.

Coordination

SecondA message is sent to

the BRAIN and the

BRAIN decides what

to do.

Coordination

ThirdThe brain sends a

message to the body

And tells it how to

RESPOND.