Thorax Part 1: Body Wall
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Questions and Answers

Which spinal nerves supply the midline strip of ventral skin below the 2nd rib?

  • T12
  • T2 - L1 (correct)
  • L1
  • C4

Which nerve descends over the iliac crest to supply the skin of the buttock?

  • Cervical plexus
  • Ilioinguinal
  • Supraclavicular
  • Iliohypogastric (correct)

Which branches emerge in the midaxillary line to innervate an oblique zone of skin?

  • Posterior rami branches
  • Lateral cutaneous branches of the spinal nerves (correct)
  • Cervical plexus branches
  • Supraclavicular branches

Which spinal nerves supply the lateral strip of skin in the thorax and lumbosacral parts?

<p>T2 - L1 (B)</p> Signup and view all the answers

Which part of the body wall muscles is innervated by the posterior rami?

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

From which structure are the myotomes of the trunk developed?

<p>Mesoderm (D)</p> Signup and view all the answers

What allows the subcutaneous fat to slide freely over the underlying thoracic wall and muscles?

<p>Membranous layer of superficial fascia (B)</p> Signup and view all the answers

Where does the superior epigastric artery origionate?

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

Where does the venous return of the abdominal wall below the level of the umbilicus pass to?

<p>Great saphenous vein in the groin (C)</p> Signup and view all the answers

Which nodes receive lymphatic drainage from the anterior abdominal wall and perineum below the umbilicus?

<p>Medial group of superficial inguinal nodes (C)</p> Signup and view all the answers

What might distend in portal obstruction and lead to 'caput Medusae' if it spreads to superficial veins?

<p>Para-umbilical veins (B)</p> Signup and view all the answers

What does the thoraco-epigastric vein provide communication between?

<p>Lateral thoracic vein and superficial epigastric vein (B)</p> Signup and view all the answers

Which nodes receive lymphatic drainage from above the level of the umbilicus?

<p>Pectoral lymph nodes (B)</p> Signup and view all the answers

The scarpa fascia continues over what structures as the fascia of Colles?

<p>[Penis and scrotum] (D)</p> Signup and view all the answers

What attaches to the sides of the body of the pubic bone and continues over the penis and scrotum?

<p>Superficial perineal fascia of Colles (D)</p> Signup and view all the answers

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