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Across 1. The point at which a muscle attaches to that part of the bone which is more proximal or the less movable end of the body part 8. These structures are found by the thousands within each muscle cell and contain the actin and myosin filaments 9. Muscle makes up about 40-45% of our body _________. 11. The inner layer of connective tissue covering skeletal muscle 12. The movement of a body closer to the midline of the body 15. The neurotransmitter which allows a nervous impulse to travel from a nerve to the muscle fiber 17. The condition where a muscle is not contracted or is contracted only slightly and it begins to decrease in size 18. The movement of a body part away from the midline of the body 21. The point at which a muscle attaches to that part of the bone which is more distal or the more movable end of the body part 22. A sudden muscle contraction usually occuring when the nerve supplying the muscle has been irritated 27. The outer layer of connective tissue covering skeletal muscle 28. The muscle tissue type responsible for movement of bones 29. Connective tissue generally found joining muscle to bone 30. The muscle tissue type found only in the heart

Down 2. A type of muscle contraction resulting in a change in distance between the two ends of the muscle 3. The point at which a muscle fiber and a nerve join 4. The characteristic of muscle to receive and react to a stimulus 5. The part of the muscle where about 80% of all muscle strains occur 6. The muscle filaments within a sarcomere that do not move but are responsible for muscle contraction 7. When muscle tissue demands more oxygen than the body can supply, we are said to be in oxygen _____. 10. The middle layer of connective tissue covering skeletal muscle 13. The characteristic of muscle to return to its original shape after being stretched 14. A muscle that exists in pairs called flexors and extensors 16. Smooth, cardiac and skeletal are the three types of muscle ________ 18. The muscle filaments within a sarcomere that acutally move 19. The smallest functional unit of the muscular system 20. A type of muscle contraction where neither the muscle nor the body part affected moves 23. The chemical which, by losing something, provides the energy for muscle contraction 24. The muscle tissue type found in the digestive system and surrounding arteries 25. When a rapid or prolonged muscle contraction continues to the extreme, this occurs 26. A mineral required for muscle contraction and obtained from bone and our diet