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