science

7. bone A strong but lightweight bone
8. system Serves as the anchor for all the body's movement,provides support, and protects soft organs inside the body
10. bone Hard layer that surrounds the inner layer of the bone
11. muscles The name of the smooth muscles that perform a automatic movement
12. muscle Your heart is made of
13. Skeletal muscle, like all muscle, is made of long
15. basic unit of life
16. muscles Muscles that are involved in voluntary movement
18. when muscles contract they release

1. The ability of your body to maintain internal conditions
2. group of similar cells that work together to perform a particular function
3. system A group of organs that together perform a function that helps the body meet its needs
4. tissue The muscles are attached to bones by stretchy
5. Protects your brain
6. system A system that works together with the skeletal system to allow movement
9. skeleton Bones that function mainly to allow movement
14. muscle Muscles that are found inside some organs, such as the intestines and the stomach
17. skeleton Part of the skeleton that surrounds the axis