Human Body

5. The outermost layer of your skin.
8. Long tubes in your body where food is absorbed and waste is made.
10. Blood vessels that carry blood away from your heart.
11. The red liquid that flows through your veins and arteries, carrying nutrients and oxygen.
12. The outer layer of your body that protects you and helps you feel touch.
16. Organs that help you breathe by taking in oxygen from the air.
17. The part of your brain that controls basic life functions like breathing and heartbeat.
18. The system in your body that helps you breathe.

1. Type of cell in your body that send messages between your brain and other parts of your body.
2. The organ in your head that controls everything you do, think, and feel.
3. The muscle that pumps blood throughout your body.
4. Hard parts inside your body that support you and give you shape.
6. The process of breaking down food in your body so you can use it for energy.
7. Blood vessels that carry blood back to your heart.
9. Tissue in your body that helps you move and stay strong.
13. Your body's system that helps protect you from getting sick.
14. A substance in your skin that gives it color and helps protect it from the sun.
15. The part of your body where food is digested after you eat it.
16. An organ that helps clean your blood and break down food.