muscle anatomy crossword

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Across
  1. 1. is a complex network of specialized smooth endoplasmic reticulum that is important in transmitting the electrical impulse as well as in the storage of calcium ions
  2. 4. the sheath of connective tissue surrounding a bundle of muscle fibers.
  3. 8. is the region of a striated muscle sarcomere that contains thin filaments.
  4. 10. a protein that forms (together with myosin) the contractile filaments of muscle cells, and is also involved in motion in other types of cell.
  5. 11. the positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass.
  6. 13. a bundle of structures, such as nerve or muscle fibers or conducting vessels in plants.
  7. 14. a fibrous protein that forms (together with actin) the contractile filaments of muscle cells and is also involved in motion in other types of cells.
  8. 16. It's the muscle, is a wispy layer of areolar connective tissue that ensheaths each individual muscle fiber.
  9. 18. defines the boundaries of a muscle sarcomere.
  10. 19. is the basic contractile unit of muscle fiber.
Down
  1. 2. are extensions of the cell membrane that penetrate into the center of skeletal and cardiac muscle cells.
  2. 3. A flexible but inelastic cord of strong fibrous collagen tissue attaching a muscle to a bone.
  3. 5. Any of the elongated contractile threads found in striated muscle cells.
  4. 6. In striated muscle sarcomere, the M line is the attachment site for the thick filaments.
  5. 7. is the region of a striated muscle sarcomere that contains myosin thick filaments.
  6. 9. a sheath of fibrous elastic tissue surrounding a muscle.
  7. 12. The region of a striated muscle fiber that contains only thick (myosin) filaments.
  8. 14. consist of a single muscle cell. They help to control the physical forces within the body. When grouped together, they can facilitate organized movement of your limbs and tissues.
  9. 15. Is a thin casing of connective tissue that surrounds and holds every organ, blood vessel, bone, nerve fiber and muscle in place.
  10. 17. the cytoplasm of striated muscle cells.
  11. 20. are the filaments of myofibrils, constructed from proteins, principally myosin or actin.