Muscleis a specialized body tissue which allows movement to take place.txt

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  1. Muscle
    is a specialized body tissue which allows movement to take place
  2. Skeletal muscle tissue is made of
    muscle cells
  3. Muscle main function
    to provide movement
  4. Most important characteristic of muscle
    is its ability to contract
  5. Contractility
    it is able to shorten and thicken muscle
  6. Elasticity
    "return to its resting state, original shape after contraction or extension"
  7. Extensibility
    stretch beyond its relaxed resting state - become thinner and longer
  8. Excitability
    ability to contract in response to a stimulus
  9. Lever
    (bone) rigid rod
  10. Balanced on a
  11. Effort
    "Weight of the child acts as a resistance force, the weight of the second child acts as a force to overcome the resistance of the first"
  12. For movement to occur we need
    "a lever, a fulcrum and 2 forces - the resistance and the effort"
  13. Bones act as levers and joints function as
  14. Contraction of the muscles provider
    the effort
  15. Ends by attaching to
    the radius
  16. Contact
    short and thicken- capable only of pulling not pushing
  17. Bulk of the muscle is near
    the upper attachment to bone
  18. Attachment of the muscle to the scapula and humerus stationary bone called
    the origin
  19. Bone that moves called
    the insertion
  20. belly
    fleshy bulk of muscle between the 2 attachment points
  21. Tendon
    "attachment of muscle of muscle to bone, strong fibrous cord"
  22. Muscle allow movement to take place
    by contraction and relaxation
  23. If we want to straighten the arm
    need the biceps to relax
  24. Every action has a muscle to carry out
    its opposite action
  25. Muscles act
    in relationship to one another
  26. One muscle contracts to
    prime mover or agonist
  27. the other muscle relaxes
  28. In bending the elbow
    the biceps is the agonist and the triceps is the antagonist
  29. In straightening the elbow
    the triceps is the agonist and the biceps is the antagonist
  30. Assistant
  31. Skeletal muscle is mainly
    voluntary muscle
  32. voluntary muscle
    it is under our will
  33. Skeletal muscle
    "Striped or striated so also also called striated muscle, Voluntary"
  34. Muscle cells are
    "cylindrical in shape, Striated, Vary in length, Also called muscle fibers"
  35. Each fiber has several nuclei situated beneath
    the cell membrane or sarcolemma
  36. Each muscle fiber or cell also has a connective tissue layer called
    the endomycium
  37. the muscle fibers run
    parallel to each other
  38. Muscle fibers form
    a bundle or fascicles
  39. a bundle or fascicles
    is surrounded by another connective tissue layer - perimycium
  40. bundles of fascicles form the whole muscle
    surrounded by a connective tissue sheath - epimycium
  41. Myology
    Study of muscle
  42. My
  43. Muscle is composed of
    "75 0/0 protein, 20 0/0 water, 5 0/0 mineral salts, glycogen, glucose and fat"
  44. Individual muscle fibers
    "All or none law, Cannot partially contract"
  45. Aerobic respiration
    "Energy provided by the breakdown of carbohydrate and fat, Oxygen required"
  46. Anaerobic respiration
    Inadequate oxygen
  47. Lactic acid
    Results in the accumulation of intermediate metabolic products
  48. Muscle tone - When movement does not occur the muscles are in a state of
    partial contraction
  49. Muscle tone
    is essential to maintain posture
  50. Hypertonic
    Excess muscle tone
  51. Hypotonic
    Poor muscle tone
  52. Nerves
    Carrying internal electrical stimuli
  53. External
    electrical current
  54. Temperature
    Both hot and cold
  55. In the body the main stimulus provided by
    the nervous system
  56. Synapse
    Point where the nerve and the muscle meet
  57. Minute gap
    The contact at the synapse between muscle and nerve is across
  58. "The nerve causes certain chemical substances to cross the gap,"
    "carrying the electrical stimulus to the muscle, which then contracts"
  59. Electrical impulses
    "Effective if placed over a specific point of the muscle, Motor point, When applying faradic pads to specific muscles"
  60. Muscles relax
    when exposed to moderate heat.
  61. Excessive heat will
    stimulate muscle contraction as part of the reflex action to move away from harm
  62. Cold contract
    causing shivering maintaining body temperature
  63. Erector pili muscles
    Attached to hairs to contract trapping heat on the skin
  64. Tapping a muscle may
    cause it to contract
  65. Isometric contraction
    Do not result in body movement but use energy
  66. Isotonic contraction
    This type of contraction produces movement
  67. ISo
  68. Metric
  69. Tonic
  70. Movement
    Voluntary or involuntary contraction in all internal organs
  71. Maintenance of
  72. Heat production
    "Shivering, erector pili muscles, physical exercise"
  73. Protection
    Abdominal cavity
  74. Maximus
  75. Minimums
  76. Longus
  77. Brevis
  78. Biceps
    2 origins
  79. Triceps
    3 origins
  80. Quadriceps
    4 origins
  81. Transverse
    Transfersus abdominis ( across the midline)
  82. Oblique
    Internal oblique ( cross)
  83. Deltoid
  84. Trapezius
    Trapezoid (4 unequal sides)
  85. Serratus
    Saw toothed
  86. Rhomboid
    Diamond shape
  87. Temporal is lies over
    temporal bone
  88. Tibialis anterior is in front of
  89. Sternocleidomastoid
    has origin at sternum and clavicle and insertion at mastoid process of temporal bone
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Muscleis a specialized body tissue which allows movement to take place.txt
2012-04-02 02:07:18
Muscle system

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