Lesson 3 Muscular System

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Across
  1. 2. involuntary muscles without striation
  2. 3. by-product of anaerobic energy production that causes cramping and sore muscles
  3. 4. production of energy without oxygen
  4. 6. long & thin muscle cell
  5. 11. muscles attached to bones that enable movement
  6. 14. smooth muscles that contract or move without conscious control
  7. 16. partial contraction of muscle
  8. 17. attach skeletal muscle to bone
  9. 18. alternation of thick and thin filaments in myofibril
Down
  1. 1. bundle of protein filaments in muscle cell
  2. 5. production of energy with oxygen
  3. 7. skeletal muscles that move in response to stimulus
  4. 8. pair of muscle groups in which one muscle relaxes as the other contracts
  5. 9. heart muscle
  6. 10. muscle that closes a joint
  7. 12. muscle that opens a joint wider
  8. 13. skeletal muscles controlled by brain
  9. 15. muscle weakening and shrinking