Neurophysiologic Background for Therapeutic Exercises
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Questions and Answers

What is the physiological characteristic that determines the amount of stimulation required to initiate the response of a muscle fiber?

  • Endurance
  • Irritability of the motor unit (correct)
  • Stability
  • Cardiopulmonary fitness

    • What is the main goal of therapeutic exercises?

  • Developing fine motor skills
  • Improving cognitive function
  • Increasing cardiopulmonary fitness (correct)
  • Enhancing sensory perception

    • What is the term used to describe the mechanical response of a muscle after depolarization?

  • Flexibility
  • Contractility (correct)
  • Endurance
  • Relaxation

    • What happens if the stimulus to a muscle fiber is below the threshold level?

    <p>No muscle activity occurs</p> Signup and view all the answers

    What is the significance of understanding the normal responses of muscles during therapeutic exercises?

    <p>To recognize alterations in therapeutic exercises for injury rehabilitation</p> Signup and view all the answers

    What is the role of strength in the main goals of therapeutic exercises?

    <p>Maintaining stability</p> Signup and view all the answers

    What is the general rule of viscosity applied to muscle activity?

    <p>The faster the rate of muscle contraction, the greater the internal resistance and the less the external force that can be exerted by the muscle.</p> Signup and view all the answers

    According to Hooke's law, what happens when stress is applied to stretch a muscle's fibers?

    <p>The strain produced is proportional to the stress applied as long as the elasticity limit is not exceeded.</p> Signup and view all the answers

    What is tissue stiffness?

    <p>The resistance of tissue or a structure to deformation or change in shape or length.</p> Signup and view all the answers

    What happens to a muscle during contracture?

    <p>There is a failure of relaxation, leading to shortening of resting length.</p> Signup and view all the answers

    What is one reason for the importance of stretching after exercise?

    <p>To prevent contracture and ensure muscle relaxation.</p> Signup and view all the answers

    What can cause fatigue in muscles?

    <p>Exhaustion of a muscle with prolonged activity or failure of the circulatory system to provide necessary nutrients.</p> Signup and view all the answers

    What is one agent responsible for local muscle fatigue?

    <p>Lactic acid.</p> Signup and view all the answers

    What is the effect of stretching tissue quickly?

    <p>The tissue's stiffness, or resistance to change, is greater.</p> Signup and view all the answers

    What happens during fatigue in a resting muscle?

    <p>The quantity of lactic acid increases significantly compared to that in a non-fatigued state.</p> Signup and view all the answers

    What is fatigue closely related to?

    <p>Contracture.</p> Signup and view all the answers

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