Muscle Fiber Length and Direction Quiz
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Questions and Answers

What is the major function of muscle mentioned in the text?

  • To produce hormones
  • To generate ATP
  • To move bone (correct)
  • To store glycogen

Which of the following is an example of a passive (non-contractile) component of skeletal muscle?

  • Tendon (correct)
  • Actin
  • Myosin
  • Troponin

What type of muscle tension is created by the active components of skeletal muscle?

  • Eccentric tension
  • Passive tension
  • Isometric tension
  • Active tension (correct)

Which term refers to the thick filament in skeletal muscles?

<p>Myosin (C)</p> Signup and view all the answers

What are the two types of muscle fibers mentioned in the text?

<p>Slow-twitch and Fast-twitch (D)</p> Signup and view all the answers

What is the characteristic ability of muscles mentioned in the text that allows them to move bone?

<p>Contraction (C)</p> Signup and view all the answers

What type of muscle fibers are Type I fibers?

<p>None of the above (D)</p> Signup and view all the answers

What is the significance of shortened muscles, according to Janda?

<p>They are hyperactive &amp; tight due to overuse (B)</p> Signup and view all the answers

What role do muscles traversing more than one joint play?

<p>Increase range of motion (B)</p> Signup and view all the answers

What is the normal temperature range for muscles?

<p>$82.5⁰F - 107.6⁰F$ (D)</p> Signup and view all the answers

What is the primary role of Type I fibers?

<p>Tonic, postural muscles of the back (D)</p> Signup and view all the answers

How does an imbalance in muscle length affect movement patterns?

<p>It leads to joint dysfunction (A)</p> Signup and view all the answers

In assessing the Pectoralis Major, clavicular division, what is the normal position of the arms during the procedure?

<p>Abducted to 90 degrees and externally rotated (A)</p> Signup and view all the answers

Which type of end-feel is considered normal when assessing the Pectoralis Major, clavicular division?

<p>Springy (D)</p> Signup and view all the answers

In assessing the strength of the Pectoralis Major, sternal division, what is the recommended position of the patient's arms?

<p>Flexed to 90 degrees and internally rotated (C)</p> Signup and view all the answers

When assessing muscle strength, where should the muscle be placed for mid-length assessment?

<p>At mid-length (D)</p> Signup and view all the answers

What is the recommended count for patient resistance during a strength assessment of the Pectoralis Major, sternal division?

<p>5 (C)</p> Signup and view all the answers

In muscle strength assessment, what line is used to push the patient's arm into abduction for testing?

<p>Oblique line connecting ASIS with shoulder (D)</p> Signup and view all the answers

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