Myopathy and NMJ Lesions
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Questions and Answers

What is the primary characteristic of myopathy?

  • Myalgia
  • Fatigue (correct)
  • Muscle hypertrophy
  • Muscle stiffness
  • Which type of myopathy is associated with exercise intolerance and muscle atrophy?

  • Cramp-induced myopathies
  • Hypothyroid myopathy (correct)
  • Toxic/drug-induced myopathies
  • Inflammatory myopathies
  • What is the most common 'negative' symptom reported by a patient with muscle disease?

  • Myalgia
  • Muscle cramps
  • Muscle hypertrophy
  • Weakness (correct)
  • Which type of myopathy is commonly associated with localized contraction of an entire muscle group, individual single muscle, or select muscle fibers?

    <p>Myotonic disorders</p> Signup and view all the answers

    Which type of myopathy is specifically associated with continuous, involuntary, painful muscle contractions?

    <p>Myotonic disorders</p> Signup and view all the answers

    Which type of myopathy is commonly associated with muscle pain and is not common in most other muscle diseases?

    <p>Inflammatory myopathies</p> Signup and view all the answers

    What is the common symptom of exercise intolerance?

    <p>Fatigue</p> Signup and view all the answers

    Which type of muscular hypertrophy refers to an increase in myofibrils?

    <p>Myofibrillar</p> Signup and view all the answers

    What is the phenomenon of impaired relaxation of muscle after forceful voluntary contraction called?

    <p>Myotonia</p> Signup and view all the answers

    Which type of muscular dystrophy is a lethal progressive pediatric muscle disorder?

    <p>Duchene muscular dystrophy</p> Signup and view all the answers

    What causes muscle wasting and weakness that makes it hard to relax the muscles after gripping or holding something?

    <p>Myotonic dystrophy (MD)</p> Signup and view all the answers

    What is the most common kind of muscular dystrophy in adults?

    <p>Myotonic dystrophy (MD)</p> Signup and view all the answers

    What is the common cause of myotonia?

    <p>Repetitive depolarization of muscle membrane</p> Signup and view all the answers

    Which gene mutation causes type 1 myotonic dystrophy (DM1)?

    <p>DMPK gene</p> Signup and view all the answers

    What is the primary cause of premature demise in individuals affected by Duchene muscular dystrophy (DMD)?

    <p>Respiratory and/or cardiac failure</p> Signup and view all the answers

    What is the invariable result of any disturbance in the biochemical pathways that support muscle contraction?

    <p>Fatigue</p> Signup and view all the answers

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