Body Systems and Homeostasis

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Across
  1. 3. muscle surrounded by a layer of connective tissue
  2. 7. a minute thin-walled vessel of the body
  3. 9. consist of a single muscle cell
  4. 11. the body's ability to keep a constant internal environment
  5. 18. the system of organs and tissues that help you breathe
  6. 19. system that is your body's central framework
  7. 21. the system that excrete wastes from the body
Down
  1. 1. A blood vessel that carries blood from the heart to tissues and organs in the body
  2. 2. the system that contains the heart and the blood vessels and moves blood throughout the body
  3. 4. system composed of specialized cells called muscle fibers
  4. 5. the system of glands and organs that make hormones and release them
  5. 6. involves the secretions of enzymes throughout your digestive tract
  6. 8. composed of cells that have the special ability to shorten or contract
  7. 10. any process that living things use
  8. 12. system that controls everything you do, including breathing, walking, thinking, and feeling
  9. 13. the system of organs that take in food and liquids and break them down
  10. 14. chemical substances that act like messenger molecules in the body
  11. 15. A blood vessel that carries blood to the heart from tissues and organs in the body
  12. 16. an organ which produces and releases substances that perform a specific function in the body
  13. 17. when food is broken down by processes that are not chemical in origin
  14. 20. a collection of parts able to work together to serve a common purpose