Thorax Venous Drainage Anatomy
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Questions and Answers

What is the level at which the inferior hemiazygos vein ends?

  • T4 or T5
  • T8 or T9 (correct)
  • T12 or L1
  • T10 or T11

Which of the following veins does not drain into the azygos vein?

  • 9th to 11th left posterior intercostal veins
  • 3rd to 5th left anterior intercostal veins (correct)
  • 1st left posterior intercostal vein
  • 4th to 11th right posterior intercostal veins

What is the course of the inferior hemiazygos vein?

  • It enters the thorax by piercing the right crus of diaphragm
  • It enters the abdomen by piercing the left crus of diaphragm
  • It enters the thorax by piercing the central tendon of diaphragm
  • It enters the thorax by piercing the left crus of diaphragm (correct)

What is the relationship between the thoracic duct and the azygos vein?

<p>The thoracic duct crosses the azygos vein (C)</p> Signup and view all the answers

What is the venous drainage of the left thoracic wall?

<p>Posterior intercostal veins → azygos vein → SVC (A)</p> Signup and view all the answers

Which of the following veins is a tributary of the azygos vein?

<p>Left subcostal vein (B)</p> Signup and view all the answers

Where does the superior vena cava terminate?

<p>Behind the lower border of the sternal end of 3rd right costal cartilage (A)</p> Signup and view all the answers

Which of the following tributaries drains into the left brachiocephalic vein?

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

What is the origin of the superior vena cava?

<p>Behind the lower border of the sternal end of 1st costal cartilage (A)</p> Signup and view all the answers

Which of the following is a tributary of the azygos vein?

<p>Right lymphatic duct (C)</p> Signup and view all the answers

What is the location of the thoracic duct in relation to the brachiocephalic vein?

<p>It is a tributary of the left brachiocephalic vein (B)</p> Signup and view all the answers

The intrathoracic part of the IVC ends in the?

<p>Right atrium (B)</p> Signup and view all the answers

What is the number of pulmonary veins that emerge from each lung?

<p>2 (A)</p> Signup and view all the answers

What is the relation of the oblique pericardial sinus to the pulmonary veins?

<p>It is located between the right and left pulmonary veins (B)</p> Signup and view all the answers

What is the direction of the right innominate vein?

<p>Vertical (B)</p> Signup and view all the answers

What is the relationship between the right phrenic nerve and the right innominate vein?

<p>The right phrenic nerve is lateral to the right innominate vein (D)</p> Signup and view all the answers

How do the left and right innominate veins differ in terms of length?

<p>The left innominate vein is longer than the right (B)</p> Signup and view all the answers

Which of the following is NOT a part of the venous drainage of the thorax?

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

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