The Skeletal System Review Game

You heard in the Read-Aloud that when you were born, you had about 300 bones in your body. As an adult, you have 206 bones in your body. What happened to the bones?

• Bones break and dissolve in the body.

• Bones grow and change over time. Many of them joined together, like the skull bones and tailbone.

• Nothing - most people still have 300. That statement is false.

How do bones heal and grow?

• They are made of marrow, living cells, and tissues that replace worn-out cells.

• You take vitamins.

• They stop growing when you are a baby and if they break, you get a cast.

 Why is the skeletal system so important?

• The bones circulate your blood and help your heart pump.

• The bones help with digestion and give your body nutrients.

• The bones give the human body its structure, allowing it to stand up on its own. It also protects vital organs.

What is inside bones?

• Nothing, they are hollow.

• A jellylike tissue called marrow, which fills the cavities of the bones.

• A hard substance that makes the bones heavy.

Why is bone marrow important?

• It keeps your bones from breaking.

• It stops your bones from growing too big for your body.

• It produces blood cells that help to fight infections, carry oxygen throughout the body, and allow bones to grow.

Why are the spaces in between your rib cage and the slight bend of your spine important?

• They allow the skeletal system to be flexible.

• They help you to stand up taller.

• They help you breathe better.