Sixth Grade
Worksheets
Your Bones and Muscles
You have lots of different kinds of bones inside your body. Adults have 206 bones. Kids have more than that. As kids grow, some of their bones grow together. Your bones make a framework that holds you up. It is called your skeleton. It also gives your body its shape. Without bones and muscles, you would not be able to move.
Some of your bones protect the soft parts of your body. Your skull bones are like a hard hat that protects your brain. Your rib bones curve around your chest. They protect your heart and lungs.
Other bones are for moving. You can bend in the places where your bones fit together. These places are called joints. Try walking without moving your knees or ankles. It's not easy! You can't sit down without bending. You can't walk up or down stairs without bending, either.
