Serratus Anterior Muscle Quiz
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Questions and Answers

Which muscle protracts the shoulder girdle and can cause winging of the scapula if paralyzed?

  • Trapezius
  • Deltoid
  • Serratus Anterior (correct)
  • Pectoralis Major
  • What is the nerve supply for the Serratus Anterior muscle?

  • Phrenic Nerve
  • Suprascapular Nerve
  • Long Thoracic Nerve (correct)
  • Accessory Nerve
  • Which muscle, when acting with the trapezius, rotates the scapula so that the glenoid cavity looks upwards?

  • Serratus Anterior (correct)
  • Rhomboids
  • Latissimus Dorsi
  • Deltoid
  • What is the origin of the Trapezius muscle?

    <p>Back of skull and neck</p> Signup and view all the answers

    Where are the lower fibers of the Trapezius muscle inserted?

    <p>Rough tubercle on the crest of the spine of scapula</p> Signup and view all the answers

    Which muscle elevates the shoulder girdle and rotates the scapula so that the glenoid cavity looks upwards?

    <p>Trapezius</p> Signup and view all the answers

    What is the action of the middle fibers of the Trapezius muscle?

    <p>Retract the scapula</p> Signup and view all the answers

    Where does the Latissimus dorsi muscle originate from?

    <p>Spines of lower thoracic spines</p> Signup and view all the answers

    What is the insertion point of the Latissimus dorsi muscle?

    <p>Floor of bicipital groove of humerus</p> Signup and view all the answers

    What is the action of the Latissimus dorsi muscle?

    <p>Extends, medially rotates, and adducts the arm</p> Signup and view all the answers

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