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

What is the innervation for the anterior scalene muscle?

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

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

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

Where does the anterior scalene muscle originate from?

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

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

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

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

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

To which rib does the posterior scalene muscle attach?

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

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

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

Which arteries supply blood to the scalene muscles?

<p>Ascending cervical artery (D)</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 (B)</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 (D)</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 (D)</p> Signup and view all the answers

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

<p><strong>TOS ADSON’S</strong> Test (D)</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 (A)</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 (C)</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) (A)</p> Signup and view all the answers

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