Across
- 4. plasma membrane of muscle
- 6. surrounded by a membrane called perimysum
- 9. functional unit inside of a muscle fiber
- 11. a muscle under conscious control
- 14. muscle aka striated
- 15. long weak contractions
- 18. attaches muscle to bone
- 19. surrounds muscle
Down
- 1. where thick and thin filaments overlap
- 2. boundary between sarcomeres
- 3. a collection of cells that are excitable
- 5. produces heat
- 7. a muscle that is not under conscious control
- 8. enlargement of a muscle
- 10. fiber a single muscle cell
- 12. thin filament
- 13. a sustained involuntary contraction
- 16. thick filament
- 17. pacemaker cells of the heart
- 20. muscle fiber + motor neuron