Across
- 1. Muscle group of the anterior upper leg
- 5. thick filaments of a muscle fiber with heads that pull actin
- 6. thin filaments of a muscle fiber; pulled by myosin
- 8. when muscles become tired
- 10. largest single muscle of the body
- 12. movement describing bringing away from midline or body
- 14. type of muscle for involuntary movement like digestion
- 16. muscle group near the shoulders
- 17. movement describing increasing angle of joint
- 18. examples include actin and myosin
- 20. type of muscle for voluntary movement
- 24. movement describing bringing towards midline of body
- 25. muscle group of the neck and upper central back
- 26. the length of the muscle ______ with relaxation
- 27. movement describing increasing angle of joint
- 28. movement of turning outwards
- 29. muscle group also known as the calves
Down
- 2. ______ _____ Theory describes how muscles contract
- 3. connects bones to bones
- 4. muscle group found at the sides of the rectus abdominus
- 7. movement of turning inwards
- 9. organelle that provides the energy needed for muscle contraction (hint: think back to biology - what organelle makes energy?)
- 11. type of muscle that makes up the heart
- 13. main function of skeletal muscles
- 15. Individual cell of skeletal muscle
- 19. connects muscles to bones
- 21. the circumference of the muscle _____ with relaxation
- 22. muscle group of the posterior upper leg
- 23. bundle of muscle fibers