Muscle system

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Across
  1. 2. are involuntary contractions on skeletal muscles that usually move voluntarily
  2. 4. its function is to pump up blood
  3. 5. what is the main function of the muscular system
  4. 6. Which is the strongest muscle
Down
  1. 1. which muscle has voluntary movement
  2. 3. are injuries to the muscle where the fibres that make up the muscle break