Mari Crouch's Crossword Dessert

7. Is responsible for making red and white blood cells.
8. The muscle tissue around the heart.
12. The long tube that travels to your stomach is called the ________.
14. The ______ joint is found in your knees and elbows.
15. The bones in your head that surround and protect the brain.
17. The part of the nervous system that keeps track of everything in your body.
18. The tiny air sacs in the lungs.
20. These cells carry nutrients and oxygen around the body.

1. The curved muscle below the lungs.
2. The organ that stores urine is called the ________.
3. The ________ stores and cleans the blood.
4. This organ digests food with it's acids.
5. The __________ is an organ in the endocrine system that controls the amount of calcium in your body.
6. The bundle of nerves that sends messages to the brain to control body movements.
9. The ________ system protects and supports the body.
10. The chemical used to lower your blood sugar.
11. The body's largest organ.
13. The chemical released to increase your blood sugar.
16. This organ pumps blood throughout the body.
19. ________ brings non-oxygenated blood back to the heart.