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