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Membrane Proteins and Muscle Pain Quiz
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Membrane Proteins and Muscle Pain Quiz

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Questions and Answers

What is the possible underlying cause of exertional rhabdomyolysis?

  • Variation in total antioxidant status
  • Increased oxidative stress
  • Blood leukocyte counts
  • Sickle cell disease (correct)
  • Which urinary constituents are used as an index of muscle injury after exercise?

  • Hydroxyproline and hydroxylysine (correct)
  • Amino acids valine and leucine
  • Creatine and creatinine
  • Uric acid and urea
  • What does dark urine after strenuous activities indicate?

  • Breakdown of connective tissue (correct)
  • Dehydration
  • High iron levels
  • Increased antioxidant levels
  • What is the key effector that links inflammation with DNA damage after exhaustive endurance exercise?

    <p>Reactive oxygen species (ROS)</p> Signup and view all the answers

    Which method should be used to detect myoglobinuria and haemoglobinuria to confirm rhabdomyolysis?

    <p>Immunochemical methods</p> Signup and view all the answers

    What is the role of tropomyosin in muscle contraction?

    <p>It binds to actin filaments, blocking the attachment sites for myosin head groups</p> Signup and view all the answers

    What is the role of troponin in muscle contraction?

    <p>It is a Ca2+-binding protein that initiates contraction when bound to calcium</p> Signup and view all the answers

    What is the role of the sarcoplasmic reticulum in muscle contraction?

    <p>It releases calcium ions to initiate the contraction process</p> Signup and view all the answers

    What is the primary energy source for muscle contraction?

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

    What is the function of the myofibrils in muscle cells?

    <p>They are bundles of parallel actin and myosin filaments responsible for contraction</p> Signup and view all the answers

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