Across
- 2. Chemically attracted to actin
- 3. Its release into the sarcoplasm is triggered during the latent period
- 5. Holds tropomyosin in blocking position
- 7. Segment of myofibril between 2 successive Z lines
- 9. The first phase of twitch contraction
- 10. Covers the entire muscle as a whole
- 12. Myofilaments that are made up of actin, tropomyosin, and troponin
- 13. Covers actin molecules when the muscle is at rest
- 14. Point of attachment that does not move during muscle contraction
- 15. Binds fascicles together
Down
- 1. Type of contraction that occurs when muscle length is the same, but tension of the muscle increases
- 4. This phase begins when calcium binds to troponin
- 5. Allow electrical signals traveling along the sarcolemma to move deeper into the cell
- 6. Type of contraction that occurs when tension of a muscle is the same, but length of the muscle changes
- 8. Covers each skeletal muscle fiber
- 10. Allows skeletal muscle cells to respond to nerve signals
- 11. Made up of thick and thin myofilaments