Across
- 5. Repeating units in muscles that contain proteins
- 8. __________ tissue, supports and connects muscle fibers
- 9. Proteins that slide past each other during muscle contractions
Down
- 1. Muscle _____, individual cells that make up muscles
- 2. Involuntary muscles that line the walls of organs and help with things like digestion
- 3. ________ system,helps you move and function
- 4. Found in the heart and are responsible for helping pump blood throughout the body
- 6. Type of muscles attached to bones and control movement and posture
- 7. Proteins that also slide past each other during muscle contractions