Human Anatomy: Muscles of the Back
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Human Anatomy: Muscles of the Back

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Questions and Answers

Which nerve is responsible for the nerve supply to the latissimus dorsi?

  • Thoracodorsal nerve (correct)
  • Suprascapular nerve
  • Long thoracic nerve
  • Dorsal scapular nerve

    • What is the primary action of the latissimus dorsi muscle?

  • Flexion of the hip
  • Extension of the forearm
  • Adduction and medial rotation of the arm (correct)
  • Elevation of the scapula

    • What is the insertion point of the levator scapulae muscle?

  • Inferior angle of the scapula
  • Superior angle of the scapula
  • Medial border of the scapula above the spine (correct)
  • Lateral border of the scapula

    • Which muscles are primarily involved in retracting the scapula?

    <p>Rhomboideus major and minor</p> Signup and view all the answers

    What is the origin of the rhomboideus major muscle?

    <p>T2 to T5 vertebrae</p> Signup and view all the answers

    What is the primary action of the pectoralis major muscle?

    <p>Adduction and medial rotation of the arm</p> Signup and view all the answers

    Which muscles are part of the superficial layer of the back?

    <p>Latissimus dorsi and trapezius</p> Signup and view all the answers

    What is the nerve supply for the pectoralis minor muscle?

    <p>Medial pectoral nerve</p> Signup and view all the answers

    Which of the following actions is primarily associated with the trapezius muscle's upper fibers?

    <p>Elevate the shoulder</p> Signup and view all the answers

    Apart from its role in scapula movement, what is another function of pectoralis minor?

    <p>Accessing inspiration</p> Signup and view all the answers

    What is the insertion point of the subclavius muscle?

    <p>Clavicle (subclavius groove)</p> Signup and view all the answers

    Which muscles are included in the deep layer of the back?

    <p>Rhomboideus major and minor</p> Signup and view all the answers

    What are the origins of the pectoralis major muscle?

    <p>Front of sternum and clavicle</p> Signup and view all the answers

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