Across
- 2. Aids of smiling.
- 7. Motor neurons are connected to ___.
- 8. protects internal organs.
- 11. helps maintain body temperature.
- 13. Skeletal muscle is straited/not straited.
- 16. The muscle portion of the heart.
- 17. Compress the abdomen.
- 18. system that digests food.
- 19. system that helps with breathing.
- 21. Skeletal muscle is.
Down
- 1. Cardiac muscle is only found in this.
- 3. Cardiac and Smooth are these types of muscles.
- 4. The neurotransmitters signal muscle __.
- 5. A heart cell.
- 6. Thick filaments.
- 9. pumps blood through the body.
- 10. Muscles do this.
- 12. Skeletal muscle produces this.
- 14. Tendon connects the muscle to this.
- 15. Muscles are very complex group of ____.
- 20. Skeletal muscles works in ____.