Musculoskeletal System Overview
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Questions and Answers

What is the function of troponin T?

  • Binds to tropomyosin (correct)
  • Provides mechanical support
  • Acts as a shock absorber
  • Inhibits F-actin-myosin interaction

    • What is the main function of the skeleton?

  • Act as the metabolic reservoir of minerals
  • Facilitate nerve stimulation
  • Trap calcium for muscle contraction
  • Provide protection (correct)

    • What is the composition of osteoid?

  • Inorganic salts deposited in a matrix
  • Nonmineral matrix of collagen and glycosaminoglycan (correct)
  • Mineral matrix of collagen and glycosaminoglycan
  • Hardened bone material

    • What stimulates smooth muscle contraction?

    <p>Nervous stimulation</p> Signup and view all the answers

    In which type of muscle cells are actin and myosin filaments not organized?

    <p>Smooth muscle cells</p> Signup and view all the answers

    What is the main function of the skeleton?

    <p>Provide protection</p> Signup and view all the answers

    What is the composition of osteoid?

    <p>Nonmineral matrix of collagen and glycosaminoglycan</p> Signup and view all the answers

    Which type of bone cells are responsible for bone formation?

    <p>Osteogenic cells</p> Signup and view all the answers

    In which type of muscle cells are actin and myosin filaments not organized?

    <p>Smooth muscle cells</p> Signup and view all the answers

    Where are involuntary muscles mainly found?

    <p>In the internal organs</p> Signup and view all the answers

    What is the characteristic of voluntary muscles?

    <p>Striated and under voluntary control</p> Signup and view all the answers

    What is the main function of the Musculoskeletal System?

    <p>Support, movement, and stability</p> Signup and view all the answers

    Where is cardiac muscle found?

    <p>In the heart</p> Signup and view all the answers

    What causes the red pigment in muscles?

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

    What percentage of the body is made up of skeletal muscle?

    <p>40%</p> Signup and view all the answers

    What is contained in an elastic sheath called sarcolemma?

    <p>Muscle fiber</p> Signup and view all the answers

    What protein forms cross bridges with myosin during muscle contraction?

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

    What is mainly responsible for force generation in muscles?

    <p>Myosin thick filament</p> Signup and view all the answers

    What does a nerve fiber end in connection with?

    <p>End plate</p> Signup and view all the answers

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