| A | B |
| skull | protects your brains |
| permanent teeth | adult teeth |
| skeleton | bones in a body that give it shape |
| muscles | body parts under the skin that produce movement |
| heart | muscle that pumps blood |
| lungs | body parts that help you breathe air |
| digest | break down food in the body |
| saliva | fluid in a mouth that helps break down food |
| stomach | body part where food is broken down |
| baby teeth | first teeth |
| ribs | protects your lungs and heart |
| exercise | helps keep bones and muscles strong and healthy |
| heart rate | how fast or slowly your heart beats |
| small intestine | place food goes after it leaves the stomach |
| large intestine | place where food you don't need moves |