Skeletal and Muscular System

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Across
  1. 1. Bone formation that replaces a cartilage model is called ______.
  2. 3. Bone cells that build new bone matrix are called ______.
  3. 7. The thin protein filaments in a myofibril are composed mainly of ______.
  4. 9. A transverse (T) tubule and two terminal cisternae form a muscle ______
  5. 12. The neurotransmitter that stimulates skeletal muscle contraction is ______.
  6. 15. The connective tissue sheath surrounding an entire muscle is called the ______.
  7. 17. The bone of the thigh is called the ______.
  8. 19. Carpals and tarsals are examples of ______ bones.
  9. 21. The dark band in a sarcomere that contains overlapping actin and myosin filaments is the ______ band.
  10. 26. Bone cells that break down bone matrix to release calcium are called ______.
  11. 27. The ability of a muscle to be stretched beyond its resting length is called ______.
  12. 28. The upper arm bone that connects to the shoulder is the ______.
  13. 29. The light band in a sarcomere that contains only actin filaments is the ______
  14. 30. The breastbone in the human body is also called the ______
Down
  1. 2. The shoulder blade is known as the ______.
  2. 4. A bundle of muscle fibers surrounded by perimysium is called a ______
  3. 5. An elongated, multinucleated muscle cell is known as a muscle ______
  4. 6. The cell membrane of a muscle fiber is called the ______.
  5. 8. Bone formation that begins in embryonic connective tissue membranes is called ______
  6. 10. marrow, Spongy bone contains _____ where blood cells are formed.
  7. 11. The skull and ribs are examples of ______ bones.
  8. 13. The cartilage growth plate where long bones lengthen is called the _____.
  9. 14. The thick protein filaments in a myofibril are composed mainly of ______.
  10. 16. The connective tissue sheath surrounding each muscle fiber is called the ______.
  11. 18. Mature bone cells that maintain the bone matrix are called ______
  12. 20. The ability of a muscle to respond to a stimulus is called ______.
  13. 22. The tough, outer membrane covering bone surfaces is the ______.
  14. 23. The ability of a muscle to shorten forcefully is called ______.
  15. 24. unit, One motor neuron and all the muscle fibers it stimulates form a single ______.
  16. 25. A smooth, rounded end of a bone that articulates with another bone is called a ______.