L20 The Duodenum Small Intestine Anatomy
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Questions and Answers

What is the total length of the duodenum?

  • 35 cm
  • 30 cm
  • 25 cm (correct)
  • 20 cm
  • Which part of the duodenum is the most common site of ulceration?

  • The fourth part (ascending)
  • The first part (superior) (correct)
  • The second part (descending)
  • The third part (horizontal)
  • Which part of the duodenum is connected to the liver by the hepatoduodenal ligament?

  • The second part (descending)
  • The third part (horizontal)
  • The first part (superior) (correct)
  • The fourth part (ascending)
  • Which part of the duodenum lies posterior to the transverse colon and anterior to the right kidney?

    <p>The second part (descending)</p> Signup and view all the answers

    Which part of the duodenum is the shortest?

    <p>The fourth part (ascending)</p> Signup and view all the answers

    What is the length of the first part (superior) of the duodenum?

    <p>2 inches</p> Signup and view all the answers

    Which part of the duodenum is the longest?

    <p>The third part (horizontal)</p> Signup and view all the answers

    What is the shape formed by the duodenum?

    <p>A 'C' shape</p> Signup and view all the answers

    What artery supplies the duodenum above the major duodenal papilla?

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

    What artery supplies the duodenum below the major duodenal papilla?

    <p>Inferior pancreaticoduodenal artery</p> Signup and view all the answers

    Which vein does the duodenum drain into?

    <p>Superior mesenteric vein</p> Signup and view all the answers

    What is the posterior relation of the first part of the duodenum?

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

    Where does the bile duct open into the duodenum?

    <p>Second part</p> Signup and view all the answers

    What is the anterior relation of the third part of the duodenum?

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

    What is the lymphatic drainage of the duodenum?

    <p>Pancreaticoduodenal, hepatic, and coeliac lymph nodes</p> Signup and view all the answers

    What are the sympathetic nerve supply to the duodenum?

    <p>T9 and T10</p> Signup and view all the answers

    Which part of the duodenum crosses over the inferior vena cava and aorta?

    <p>Third part</p> Signup and view all the answers

    What is the name of the opening where bile and pancreatic secretions enter the duodenum?

    <p>Major duodenal papilla</p> Signup and view all the answers

    What is the anatomical structure located inferiorly to the pancreas and posteriorly to the superior mesenteric artery and vein?

    <p>Third part of the duodenum</p> Signup and view all the answers

    What is the sharp turn called where the duodenum joins the jejunum?

    <p>Duodenojejunal flexure</p> Signup and view all the answers

    Which muscle aids in the movement of intestinal contents from the duodenum into the jejunum?

    <p>Suspensory muscle of duodenum</p> Signup and view all the answers

    What is the name of the fibromuscular band that suspends and supports the duodenojejunal flexure?

    <p>Ligament of Treitz</p> Signup and view all the answers

    From which anatomical structure does the ligament of Treitz arise?

    <p>Right crus of the diaphragm</p> Signup and view all the answers

    What is the effect of the contraction of the ligament of Treitz?

    <p>It increases the angle of the duodenojejunal flexure</p> Signup and view all the answers

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