Across
- 2. theory Theory explaining muscle contraction
- 3. Imaginary line separating sarcomeres
- 5. The type of muscle attached to bones
- 7. Protein that blocks actin binding sites
- 9. Ion released to initiate contraction
- 10. Tubular extensions of the sarcolemma
- 11. Increase in muscle fiber size due to training
- 12. tendon organ Sensory receptor that detects muscle tension
- 16. junction Synapse between motor neuron and muscle
- 18. Muscle tissue with no striations
- 19. Protein that forms the thin filament
Down
- 1. Sensory receptor that detects muscle stretch
- 4. Structure that stores calcium ions
- 6. Protein that binds calcium during contraction
- 8. Neurotransmitter released at the neuromuscular junction
- 13. Muscle tissue found in the heart
- 14. Protein that forms the thick filament
- 15. Reduction in muscle fiber size due to disuse
- 17. Basic functional unit of muscle
- 20. Connective tissue that attaches muscle to bone