Muscles

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Across
  1. 3. When muscles become shorter.
  2. 4. Muscles always work in...
  3. 6. The things that make muscles.
  4. 7. The muscles are attached to bone.
  5. 8. When muscles become longer.
Down
  1. 1. The long thin thread made of many tiny fibers.
  2. 2. The muscle is in our heart.
  3. 5. The muscles we can't control and are in our stomach, bladder, and blood vessles, and interstines.