Thorax Venous Drainage Anatomy

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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?

The thoracic duct crosses the azygos vein Signup and view all the answers

What is the venous drainage of the left thoracic wall?

Posterior intercostal veins → azygos vein → SVC Signup and view all the answers

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

Left subcostal vein Signup and view all the answers

Where does the superior vena cava terminate?

Behind the lower border of the sternal end of 3rd right costal cartilage Signup and view all the answers

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

Thoracic duct Signup and view all the answers

What is the origin of the superior vena cava?

Behind the lower border of the sternal end of 1st costal cartilage Signup and view all the answers

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

Right lymphatic duct Signup and view all the answers

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

It is a tributary of the left brachiocephalic vein Signup and view all the answers

The intrathoracic part of the IVC ends in the?

Right atrium Signup and view all the answers

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

2 Signup and view all the answers

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

It is located between the right and left pulmonary veins Signup and view all the answers

What is the direction of the right innominate vein?

Vertical Signup and view all the answers

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

The right phrenic nerve is lateral to the right innominate vein Signup and view all the answers

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

The left innominate vein is longer than the right Signup and view all the answers

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