Across
- 3. an eating disorder which starts with the letter "a"
- 5. the movement of air into and out of the lungs
- 8. the structure in which the gas exchange occurs
- 11. chemical substances found in food, build the human body
- 12. cell shape which resembles pavement
- 17. inactive form of fibrin
- 18. large tissue which supports the organs in the gut
- 19. a red blood cell
- 20. respiratory control center
Down
- 1. red/yellow bone ...
- 2. medium of the cell, can be liquid, solid, jellylike
- 4. an essential amino acid which starts with the letter "a"
- 6. a tube located in the beginning of the digestive track
- 7. a flap separating the trachea and the esophagus
- 9. a cell of which the alveoli wall is composed
- 10. the control center of heat management
- 13. tissue that contains fat cells
- 14. the process of bone growth
- 15. a part of the intestine, located in the beginning of the small intestine
- 16. liquid produced by the liver
