Bones and muscles

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Across
  1. 4. muscles that are voluntary and striated
  2. 8. surrounds each eye
  3. 9. ability to be stretched
  4. 10. muscles you control when you want to move
  5. 12. forms the wall of the heart
Down
  1. 1. muscles you can't control
  2. 2. allows muscles to return to its original shape
  3. 3. connect muscles to bone
  4. 5. shoulder that abducts an arm
  5. 6. the state of partial contraction
  6. 7. upper back and neck extends head, move
  7. 11. shrinks in size and loses strength