Across
- 3. the decrease in muscle size/strength
- 6. 80 bones-center/core
- 8. they carry blood away from the heart
- 9. the network of tubes (branches)
- 11. the top two chambers
- 12. progressive loss of bone tissue/density
- 14. the bottom two chambers
- 15. muscle-involuntary-the lining
- 16. the windpipe where the air enters
- 17. 126 bones-upper and lower limbs
Down
- 1. small vessels that carry blood between arteries and veins (they connect things)
- 2. muscle-involuntary-forms the wall of the heart
- 4. these create blood clots and stops loss of blood
- 5. the airsacs where gas exchange takes place
- 7. the main airways into the lungs
- 10. process where bone is formed, renewed, repaired
- 13. they bring blood back to the heart
- 15. muscle-attaches to bones and causes body movement