Scalene Muscles Anatomy
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Questions and Answers

Which part of the neck does the scalene muscles form part of?

  • Lateral neck (correct)
  • Posterior neck
  • Anterior neck
  • Superior neck
  • What is the function of the anterior scalene muscle?

  • Lateral flexion of the neck
  • Elevation of the first rib (correct)
  • Extension of the neck
  • Elevation of the second rib
  • Which muscles act as accessory muscles of respiration?

  • Pectoralis major and minor muscles
  • Scalene and sternocleidomastoid muscles (correct)
  • Deltoid and latissimus dorsi muscles
  • Rhomboid and trapezius muscles
  • What is the insertion point of the middle scalene muscle?

    <p>Inner border of first rib</p> Signup and view all the answers

    Which muscle is sometimes present behind the lower portion of the anterior scalene?

    <p>Scalenus minimus (Sibson's muscle)</p> Signup and view all the answers

    What is the innervation for the anterior scalene muscle?

    <p>Anterior rami of C5-C6</p> Signup and view all the answers

    Which muscle performs anterior flexion of the neck upon bilateral contraction?

    <p>Anterior scalene muscle</p> Signup and view all the answers

    Where does the anterior scalene muscle originate from?

    <p>Transverse processes of C3-C6</p> Signup and view all the answers

    What is a notable function of Sibson's muscle (Scalenus minimus)?

    <p>Depression of the first rib</p> Signup and view all the answers

    Which muscle originates from the posterior tubercles of the transverse processes of C2-C7?

    <p>Posterior Scalene</p> Signup and view all the answers

    To which rib does the posterior scalene muscle attach?

    <p>Second rib</p> Signup and view all the answers

    Which muscle is responsible for the lateral flexion of the neck when contracted ipsilaterally?

    <p>Posterior Scalene</p> Signup and view all the answers

    Which arteries supply blood to the scalene muscles?

    <p>Ascending cervical artery</p> Signup and view all the answers

    Which important anatomical structures pass between the anterior and middle scalene muscles?

    <p>Brachial plexus and subclavian vein</p> Signup and view all the answers

    What syndrome involves compression of the brachial plexus and subclavian vessels between the anterior and middle scalene muscles?

    <p>Adson's syndrome</p> Signup and view all the answers

    Which syndrome involves respiratory distress due to compression of the subclavian artery and vein between the anterior and middle scalene muscles?

    <p><strong>Scalenius anticus</strong> syndrome</p> Signup and view all the answers

    "Cooper's syndrome" is associated with which clinical condition?

    <p><strong>TOS ADSON’S</strong> Test</p> Signup and view all the answers

    Which syndrome is associated with compression of the subclavian artery and vein between the anterior and middle scalene muscles?

    <p>Naffziger's syndrome</p> Signup and view all the answers

    Which muscle performs elevation of the second rib and ipsilateral lateral flexion of the neck?

    <p>Posterior scalene</p> Signup and view all the answers

    Which clinical condition involves respiratory distress due to compression of the subclavian artery and vein between the anterior and middle scalene muscles?

    <p>Thoracic outlet syndrome (TOS)</p> Signup and view all the answers

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