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Musculoskeletal Disorders: Mechanisms of Abnormal Muscle Contraction
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Musculoskeletal Disorders: Mechanisms of Abnormal Muscle Contraction

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Questions and Answers

What is the main reason for muscle cramps according to the text?

  • Electrolyte excess
  • Lack of energy production
  • Dehydration (correct)
  • Intracellular acidosis

    • Which disorder is genetically transmitted through a recessive gene on the X chromosome?

  • Becker’s muscular dystrophy
  • Polymyositis
  • Duchenne’s muscular dystrophy (correct)
  • Limb-girdle muscular dystrophy

    • What protein is thought to affect muscle contraction in muscular dystrophies?

  • Troponin
  • Creatine phosphokinase (CPK)
  • Myoglobin
  • Dystrophin (correct)

    • Which disorder involves the replacement of muscle with fatty tissue?

    <p>Duchenne’s muscular dystrophy</p> Signup and view all the answers

    What is the main risk associated with rhabdomyolysis?

    <p>Risk for renal failure</p> Signup and view all the answers

    Which mechanism leads to muscle weakness due to systemic wasting disorders?

    <p>Lack of energy production</p> Signup and view all the answers

    What is the common cause of fatigue according to the text?

    <p>Intracellular acidosis</p> Signup and view all the answers

    What is the name of the maneuver used by individuals with Duchenne’s muscular dystrophy to stand up?

    <p>Gower's maneuver</p> Signup and view all the answers

    What is the role of B and T cells in polymyositis?

    <p>Attacking muscle groups</p> Signup and view all the answers

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