The Muscular System

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Across
  1. 2. The tough strand of tissue that connects a muscle to a bone is called a _____.
  2. 4. When a muscle _____, or shortens, the attached bones are pulled closer to each other.
  3. 8. The muscles that you can control and move when you want to are called _____ muscles.
  4. 11. Arteries and _____ contain a layer of smooth muscle that can contract and relax.
  5. 12. _____ _____ is found in internal organs and blood vessels.
  6. 14. White muscle fibers contract quickly and powerfully but _____ easily.
  7. 15. Red muscle fibers contract more slowly which helps them to _____ fatigue.
  8. 17. The muscles that make up the muscular system enable you to _____.
  9. 18. _____ is a painful condition where tendons become inflamed or even torn when muscles are overused.
  10. 20. A _____ is a muscle injury in which a muscle is overstretched or torn.
  11. 22. Some muscle diseases are _____, meaning the disease can be given to a child by their parents before it’s born.
  12. 23. A person with muscular dystrophy has poor balance, difficulty _____, and finds doing other everyday activities to be challenging
  13. 24. The muscular system includes _____ muscles.
  14. 28. The other muscle in the pair, the _____, straightens the joint.
  15. 31. Red skeletal muscles are red due to the presence of dense capillaries that are rich in _____ and mitochondria.
  16. 33. Skeletal muscle cells are multinucleated, meaning they have more than one _____ in a single cell, in order to enhance oxygen uptake and tissue repair.
  17. 34. The majority of _____ have muscles for movement.
  18. 35. The relationship between origin and insertion determines how _____ is applied to produce motion.
  19. 36. When one muscle of a pair contracts, the other muscle _____ to allow movement of the body part.
  20. 37. The muscles that make up the muscular system also help with the _____ of food.
  21. 38. The muscles that make up the muscular system pump _____ throughout your body.
  22. 39. A hereditary disease that causes skeletal muscle to become weaker over time is called _____.
Down
  1. 1. In order to supply lots of energy to the cells, cardiac muscle cells contain many _____.
  2. 3. Muscle tissue is made up of muscle _____.
  3. 5. The tissue that makes up the heart is called _____ _____.
  4. 6. _____ is an inflammation of the heart muscle that can cause heart failure and harm the cardiovascular system.
  5. 7. _____ muscles are muscles you can't control.
  6. 9. The _____ of a muscle is the attachment point on a fixed (non-moving) bone, serving as a stable anchor.
  7. 10. The muscles that make up the muscular system enable you to maintain an upright _____.
  8. 13. Strains and tears need _____ to heal.
  9. 14. One muscle in the pair, called a _____, bends a joint.
  10. 16. The _____ is the attachment point on a moving bone, which shifts when the muscle contracts.
  11. 18. There are _____ types of filaments.
  12. 19. _____ filaments, composed of myosin, provide the pulling force during muscle contraction.
  13. 21. Most skeletal muscles work in _____ around a joint.
  14. 23. Skeletal muscles contain two types of fibers: _____ skeletal muscle and red skeletal muscle.
  15. 25. The muscular system allows your body to move and be _____.
  16. 26. Strains cause the muscle tissue to _____ and can be painful.
  17. 27. _____ filaments, composed of actin, serve as the structural elements that slide during muscle contraction.
  18. 29. _____ are made up of bundles of fibers used to move parts of your body.
  19. 30. Skeletal muscle is attached to your _____ and allows you to move.
  20. 31. The _______ ____ refers to the main part of the muscle that contains muscle fibers responsible for generating force.
  21. 32. Muscle contraction is powered by _____, which are protein structures within muscle cells that enable fibers to shorten and generate force.