Muscular System Crossword

2. Thin filaments consist of actin, tropomyosin, and?
3. What phenomena occur when tension isn’t maintained by the muscle?
5. During cross-bridge activity, the bending of the cross-bridge and the pulling of thin myofilament is known as?
9. ATP is derived from Oxidative Phosphorylation, Creatine Phosphate, and what other metabolic source?
10. Which unit of the muscle cell is responsible for contraction?
11. To prevent/delay fatigue motor units are recruited
13. What is the name of a contraction that is very short and weak?
14. What happens when the thick and thin filaments within the sarcomere slide past each other?
19. Which proteins are ryanodine receptors and Ca²⁺ release channels?
20. During muscle contraction what component in the sarcomere remains the same length?
22. What muscle is responsible for voluntary movement?
24. The sarcoplasmic reticulum surrounds the T-tubules and?
25. What becomes shorter during muscle contraction and contains myosin?

1. The transverse tubule contains receptors that come into contact with foot proteins these are known as?
4. What is responsible for stimulating the skeletal muscle to contract at neuromuscular junctions?
6. What muscle is used for chewing and is the strongest?
7. Which muscle is striated and involuntary?
8. What component largely makes up thick filaments?
12. During smooth muscle excitation coupling Ca²⁺ binds to?
15. What protein blocks the binding sites on actin molecules?
16. Which molecule is responsible for binding to myosin cross bridges?
17. What is the name of a contraction that doesn’t have relaxation between stimuli?
18. If we wanted precise movements during contraction would small or large motor units be recruited?
21. Which filament is made up of tropomyosin, actin, and myosin?
23. During which step of the cross-bridge cycle is Pᵢ released?