Skeletal and Muscular Systems

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Across
  1. 1. the bone in the upper arm
  2. 4. a regulatory protein that blocks myosin from binding to actin
  3. 5. the shoulder muscle that is relatively triangular
  4. 7. the calf muscle
  5. 10. the type of muscle that lines many of your organs
  6. 11. connects bone to bone
  7. 12. the smaller bone in the lower leg
  8. 17. the muscles between the scapulas
  9. 18. the muscles along the sides of your torso
  10. 20. the collection of small wrist bones
Down
  1. 2. the thick filaments of a sarcomere that has heads
  2. 3. the muscle that lets you turn your head
  3. 6. the long "shaft" of long bones
  4. 8. the bone marrow that produces blood cells
  5. 9. threadlike structures in muscle cells that contain the actin and myosin
  6. 13. the thin filament of a sarcomere attached to the Z line
  7. 14. the circular structures in compact bone
  8. 15. the spaces between the osteons where bone cells live
  9. 16. connects bone to muscle
  10. 19. bundles of muscle cells