All About Bones

What is the outer part of a bone made of?

• blood

• muscle

• calcium

• seashells

Identify what makes up the inside of bones.

• calcium

• bone marrow

• oxygen

• soft tissues

The important job of the bone marrow cells is to...

________ carry oxygen all around the body.

• Bone marrow cells

• White blood cells

• Red blood cells

• Soft Tissues

Describe how an x-ray works so that a doctor can see the bones inside someone's body.

Explain how a cast helps broken bones heal.

What do you think might happen to a broken bone if a cast were not placed on it?