Muscular System

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Across
  1. 1. True/False: muscles are found in the eye
  2. 4. only voluntary muscle in the human body
  3. 5. fibers of this differ from other tissues
  4. 6. muscular system's second function
  5. 7. made of three proteins
  6. 8. smiling takes ________ muscles
  7. 12. Skeletal muscles work together with
  8. 13. extra muscle contractions lead to
Down
  1. 1. made of bonded units of protein myosin.
  2. 2. can be divided into two types
  3. 3. muscles make up roughly ____ ur weight
  4. 9. frowning takes ___________ muscles
  5. 10. the cardiac muscle is found in the _____
  6. 11. the smallest muscles are found here
  7. 12. the largest muscles are found here