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Questions and Answers

What is primarily responsible for generating muscle tension through strong actin-myosin coupling?

  • Passive components
  • Elastic filaments
  • Inelastic filaments
  • Active components (correct)
  • Which type of contraction occurs when muscle tension remains constant while the muscle changes length?

  • Isometric contraction
  • Tetanic contraction
  • Concentric contraction
  • Eccentric contraction (correct)
  • What is the role of the titin protein within muscle tissues?

  • Providing passive elasticity (correct)
  • Enhancing motor neuron signals
  • Regulating calcium levels
  • Facilitating strong actin-myosin binding
  • Which autoimmune disorder is characterized by antibodies against presynaptic CA2+?

    <p>Lambert-Eaton Myasthenic Syndrome</p> Signup and view all the answers

    How does spatial summation lead to increased muscle tension?

    <p>By summing the effects of individual twitches from multiple muscle fibers</p> Signup and view all the answers

    What does the term 'receptive field' refer to in the context of cutaneous sensations?

    <p>The area of skin that generates activity in an afferent neuron</p> Signup and view all the answers

    What is the main function of mechanoreceptors in the somatosensory system?

    <p>Recognize touch and proprioception</p> Signup and view all the answers

    In the context of muscle fiber force-length relationship, what does sarcomere length affect?

    <p>The strength of actin-myosin coupling</p> Signup and view all the answers

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