Blood Supply and Nerves of the Abdominal Wall Anatomy
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Questions and Answers

What artery contributes to the blood supply of the periphery of the diaphragm and some of the lateral abdominal wall?

  • Musculophrenic artery (correct)
  • Renal artery
  • Superior epigastric artery
  • Aorta
  • Which nerve is sensory from the skin of the medial aspect of the arm and is prone to being damaged during surgical procedures on the axilla?

  • Intercostal nerve
  • Serratus anterior nerve
  • Sympathetic trunk nerve
  • Intercostobrachial nerve (correct)
  • In which muscle does the intercostobrachial nerve pierce while coursing across the floor of the axilla?

  • Serratus anterior (correct)
  • Pectoralis major
  • Latissimus dorsi
  • Rectus abdominis
  • Which artery lies in the rectus sheath between the rectus abdominis muscle and the posterior rectus sheath?

    <p>Superior epigastric artery</p> Signup and view all the answers

    What do patients complain of when there is damage to the intercostobrachial nerve?

    <p>Numbness on the medial aspect of the arm</p> Signup and view all the answers

    Where does the sympathetic trunk run longitudinally alongside?

    <p>Vertebral bodies</p> Signup and view all the answers

    Which nerves supply sensation to the overlying skin and motor function to the intercostal muscles of the same space?

    <p>Intercostal nerves</p> Signup and view all the answers

    Where do the intercostal nerves and vessels run between?

    <p>Internal and innermost intercostal muscles</p> Signup and view all the answers

    Which nerves are responsible for both motor and sensory functions in the diaphragm?

    <p>Phrenic nerves</p> Signup and view all the answers

    From which spinal cord levels do the phrenic nerves originate?

    <p>C3-5</p> Signup and view all the answers

    What is the area of skin that pain arising in the diaphragm is often referred to?

    <p>$C4$</p> Signup and view all the answers

    Where do the collaterals run in relation to the ribs?

    <p>Upper margin of the rib below</p> Signup and view all the answers

    What is the phenomenon called when irritation of the diaphragm results in shoulder tip pain on the corresponding side?

    <p>Referred pain</p> Signup and view all the answers

    Where do most of the segmental posterior intercostal arteries arise from?

    <p>Descending thoracic aorta</p> Signup and view all the answers

    Which artery is often clinically referred to as the internal mammary artery?

    <p>Internal thoracic artery</p> Signup and view all the answers

    What is the direction of blood flow in the intercostal veins compared to the intercostal arteries?

    <p>Opposite direction</p> Signup and view all the answers

    Where does the internal thoracic artery originate from?

    <p>Subclavian artery</p> Signup and view all the answers

    What is the primary source of blood supply to the chest wall?

    <p>Descending thoracic aorta</p> Signup and view all the answers

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