Muscular System

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Across
  1. 1. this muscle is voluntary
  2. 4. the filaments made out of myosin
  3. 5. APs spread in cardiac muscle via gap ___
  4. 7. this protein has three subunits (I,C,T)
  5. 9. this muscle is striated and involuntary
  6. 10. stays the same length during contraction
  7. 12. this muscle in unstriated
  8. 13. smooth muscle gets calcium from the ___ cellular fluid
  9. 15. smooth muscle has ___ bodies instead of Z lines
  10. 17. has an ATP-binding site
  11. 18. dihydropyridine receptors are ____ gated
  12. 21. a contraction that has only a few activated motor neurons
  13. 22. skeletal muscle has many
  14. 24. large motor units lack this kind of control
  15. 25. strongest muscle in the body
Down
  1. 2. higher stimulation frequency will increase this
  2. 3. is 3-4x stronger than a single twitch
  3. 6. the smallest contractile unit
  4. 7. the filaments made out of actin
  5. 8. when muscle can't maintain tension
  6. 11. by itself it is globular
  7. 14. ___ proteins release Ca+ from lateral sacs
  8. 16. the longest muscle in the body
  9. 19. ACh binds to ___ gated channels on the motor end plate
  10. 20. sarcoplasmic reticulum releases and stores this
  11. 21. the color of fast glycolytic fibers
  12. 23. boundaries of a sarcomere