Structure of Skeletal Muscles
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Questions and Answers

What is the diameter of a typical myofiber in skeletal muscle?

  • 1/50 inch
  • 0.05 millimeters (correct)
  • 3 centimeters
  • 1/100 inch
  • Which proteins mainly make up the myofilaments in myofibrils of skeletal muscle?

  • Keratin and Collagen
  • Albumin and Fibrinogen
  • Hemoglobin and Insulin
  • Actin and Myosin (correct)
  • What keeps the muscle supplied with the oxygen and glucose needed?

  • Capillaries (correct)
  • Lymphatic vessels
  • Veins
  • Arteries
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