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Mastering Smooth Muscle Contraction
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Mastering Smooth Muscle Contraction

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Questions and Answers

Which type of smooth muscle is found in blood vessels, GI and urogenital organ walls, and dermis of skin?

  • Tonic smooth muscle
  • Multi-unit smooth muscle
  • Unitary/single smooth muscle (correct)
  • Phasic smooth muscle

    • Smooth muscle lacks striations because the actin and myosin filaments are not organized in _________.

  • Z-discs
  • Sarcomeres (correct)
  • A-bands
  • Myofibrils

    • Which type of contraction is involuntary but modulated by neuroendocrine chemicals?

  • Multi-unit contraction
  • Tonic contraction
  • Phasic contraction (correct)
  • Unitary/single contraction

    • What is the protein and cytoskeletal arrangement of smooth muscles?

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

    What is the MLCK/MLCP ratio involved in regulating in smooth muscle?

    <p>Calcium sensitivity</p> Signup and view all the answers

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