Muscular System-Chapter 8 Anatomy

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Across
  1. 5. Bundles of skeletal muscle fibers
  2. 8. Striations of skeletal muscle result from repeating pattern of units called this within each muscle fiber
  3. 10. Even when a muscle appears to be at rest, its fibers undergo some sustained contraction called this
  4. 11. The contractile response of a single muscle fiber to a single impulse
  5. 14. Connective tissue; extend inward from the epimysium & separates the muscle tissue into small sections
  6. 15. The protein responsible for the red color of blood
  7. 17. Causes an action/movement
  8. 18. A thin filament protein
  9. 21. Membrane channels; extend inward as invaginations from the fiber's membrane & pass all through the fiber
  10. 23. Works against an action/movement
  11. 25. When this is in contact with muscle fibers, it makes muscle fibers contract. Muscle fibers don't contract unless in contract with this neurotransmitter
  12. 26. Mysoin heads contain this enzyme; it catalyzes the breakdown of ATP to ADP & phosphate
Down
  1. 1. Helps force the contents of certain tubular organs along their lengths
  2. 2. Each transverse tubule lies between two enlarged portions of sarcoplasmic reticulum called this
  3. 3. A thick filament protein
  4. 4. The way neurons communicate with the cells that they control by chemicals called at synapse
  5. 6. Blends with fascia; a layer of connective tissue that closely surrounds each skeletal muscle
  6. 7. The more moveable end of a muscle
  7. 9. Muscle fibers within a fascicle lie within this layer of connective tissue
  8. 12. The less moveable end of a muscle
  9. 13. A protein synthesized in muscle cells & impacts the reddish-brown color of skeletal muscle tissue
  10. 16. Happens when the force of individual twitches combines the process of this action
  11. 19. Contribute to an action by the agonist helping
  12. 20. Dense connective tissue separates an individual skeletal muscle from adjacent muscles & holds it in position
  13. 22. A small gap that separates the membrane of the neuron & the membrane of the muscle fiber
  14. 24. The functional connection between a neuron & another cell