Across
- 3. When muscles become shorter.
- 4. Muscles always work in...
- 6. The things that make muscles.
- 7. The muscles are attached to bone.
- 8. When muscles become longer.
Down
- 1. The long thin thread made of many tiny fibers.
- 2. The muscle is in our heart.
- 5. The muscles we can't control and are in our stomach, bladder, and blood vessles, and interstines.