Body Systems and Homeostasis

4. the 206 bones of the human body and the tissue that connects them
5. the 600 muscles that give the body the ability to move and bend are part of the
9. The blood, blood vessels and the heart
10. uses enzymes to break down food
12. organ that makes 1 or more substances
13. involves physical movement to make food smaller
14. body parts that perform a given function
17. make and send hormones throughout the body
18. consist of a single muscle cell
19. a group of cells with the same stucture and function
20. contains muscle fibers
21. the mouth, stomach and intestines are part of the

1. an organism's ability to keep a constant internal environment
2. balance or equilibrium
3. the organs that eliminate waste products from the human body
6. the smallest blood vessels,,
7. the organs, glands and other structures that allow an organism to produce offspring
8. responsible for controlling the entire body
11. special chemicals made by the endocrine system
15. carry blood away from the heart
16. carry blood back toward the heart