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Movers And Shakers: The Muscular And Skeletal Systems

Muscle Structure. Actin and myosin filaments are bundled into myofibrils. . A bundle of myofibrils makes a muscle fiber. Muscle fibers are separated from each other by connective tissue called endomysium. A muscle fiber is a cell, and has a nucleus in it.. Several muscle fibers are bundl

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Movers And Shakers: The Muscular And Skeletal Systems

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    1. Movers And Shakers: The Muscular And Skeletal Systems

    2. Muscle Structure

    3. Muscle Structure

    6. Neural Innervation Of Skeletal Muscle

    8. Negative Feedback Prevents Injuries

    9. Negative Feedback Prevents Overstretching

    10. The Contraction Reflex

    11. The Neuromuscular Junction

    13. Excitation-Contraction Coupling

    15. Excitation-Contraction Coupling

    18. The Muscle Contraction

    20. Relaxing The Muscles

    21. Muscle Contractions Can Be Graded

    22. Isotonic And Isometric Muscle Contractions

    23. Fast-Twitch And Slow-Twitch Muscles

    24. Muscles Have A Special Oxygen Reserve

    25. Muscles Have A Special Oxygen Reserve

    26. Muscles Have A Special Energy Reserve

    27. Muscles Use Several Sources Of Energy

    28. Reciprocal Innervation Of Flexors And Extensors

    29. The Crossed-Extensor Reflex Illustrates The Reciprocal Innervation Of Flexors And Extensors

    30. Cardiac Muscle

    31. Cardiac Muscle

    32. Smooth Muscle

    33. Smooth Muscle

    34. Smooth Muscle

    35. Smooth Muscle

    36. Excitation-Contraction Coupling In Smooth Muscle

    37. Peristalsis

    38. The Parts Of A Bone

    39. The Structure Of Bone

    41. Bone Development Takes One Of Two Forms

    43. Estrogen And Testosterone Regulate Bone Density As Well

    44. Bone Serves As A Source Of Calcium And Phosphorus

    46. Maintaining Proper Calcium Levels Is Important

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