Across
- 2. Your ___ is made up of 206 bones.
- 5. Complex living structures that grow, develop, and repair themselves.
- 9. Deep in the outer layer of skin or ____, new cells form.
- 11. your ____ is the center of your skeleton.
- 14. You have 27 bones in each ___.
- 15. Strong connective tissue that attaches muscle to a bone.
- 18. When you were born, most of your bones were ____.
- 19. Your ___ is made up of all the bones in your body.
- 21. The small spaces within ___ make bone lightweight but still strong.
- 22. Opening that allow sweat to reach the surface.
- 23. This system includes specialized cells that can attack and destroy viruses.
Down
- 1. The condition in which an organisms internal environment is kept stable in spite of changes in the outside environment.
- 3. These muscles are not under your conscious control.
- 4. This has two layers that protect the body.
- 6. The bones in moveable joints are held together by _____.
- 7. Your skin helps eliminate waste whenever you ____.
- 8. These muscles provide the force that moves your bones.
- 10. Bone has two types of soft connective tissue called ____.
- 11. Some skin cells produce this in the presence of sunlight.
- 12. The ___ bone contains minerals that give bones strength.
- 13. A pigment that colors the skin.
- 16. Skeletal muscles work in ____.
- 17. When you are cold your ___ system signals your muscles to make you shiver.
- 20. If your body needs more energy, hormones from the ___ system signal the nervous system to make you feel hungry.
- 21. This is the reaction of your body to possibly threatening, challenging, or uncomfortable events.