Across
- 1. the center/core of your skeleton
- 4. the air sacs where the gas exchange takes place
- 6. top two chambers of the heart (fill)
- 8. structures in the blood to make blood clots
- 12. separates the left and right side of the heart
- 15. the process by which bone is formed, renewed, or repaired
- 21. exchange of oxygen and CO2 in the lungs (with air and blood)(2 words)
- 22. bottom two chambers of the heart (push)
- 23. the minuscule tears in muscle when you work them harder than they are used to ("a good tear")
- 24. when your muscle is flexed (opposite of extension)
Down
- 2. exchange of gases between the blood cells and the body (2 words)
- 3. strong, flexible connective tissue (acts as a cushion)
- 5. deoxygenated blood comes through the _____ side of the heart
- 7. natural "tension" of the muscle fibers (2 words)
- 9. when your muscle is not flexed (opposite of contraction)
- 10. carry blood AWAY from the heart
- 11. decrease in muscle size/strength after long periods of low/limited muscle usage
- 13. the band of fibers (slightly elastic) that attaches bone to bone
- 14. 220-your age=______ (three words)
- 16. a fibrous cord that attaches muscle to bone
- 17. carry blood back INto the heart
- 18. upper and lower limbs, shoulders, hips
- 19. any type of break to the bone
- 20. oxygenated blood enters the heart on the ____ side to be pushed out through the body