Muscular System

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Across
  1. 3. When the strength in a muscle contraction decreases it results in muscle...
  2. 4. Anchors muscle to bone
  3. 6. Protein that composes myofilaments
  4. 7. Muscle tones maintain..
  5. 9. Muscle shrinkage
  6. 10. Basic functional unit of skeletal muscle
Down
  1. 1. The fluid-filled sac that helps lubricate muscle movement
  2. 2. Endurance training leads to more what
  3. 4. A quick jerky movement in response to stimulus
  4. 5. Increase in size
  5. 8. Protein that forms thicc myofilaments