Across
- 1. organ for breathing
- 4. vessel which carries blood to the heart
- 6. organ which cleans blood
- 7. muscles are made mostly of this
- 9. hard substance making up the skeleton
- 12. organ that pumps blood
Down
- 2. fibers transmitting impulses in the body
- 3. sore in the stomach caused by severe acidosis
- 5. this consists of conjugated proteins
- 8. protective covering of the body
- 10. substances help digestion in the mouth
- 11. organ digesting foods