Azygous System of Veins

Question 1

Tributaries- 1st Intercostal Space: Drain Point

Answer 1

Into the brachiocephalic or vertebral vein

Question 2

Tributaries- Superior Intercostal Vein: Left Side characteristics

Answer 2

2 or 3 spaces drain into left brachiocephalic vein, usually crossing the aortic arch and runs in between the left phrenic and vagus nerve

Question 3

Tributaries- Superior Intercostal vein: Right side characteristics

Answer 3

2 or 3 spaces drain into terminal portion of azygos veinf

Question 4

Tributaries- Azygous Vein Proper: Location

Answer 4

Begins in abdomen as contiuation of right ascending lumbar vein

Question 5

Tributaries- Azygous Vein proper: Pathway

Answer 5

Passes through the aortic hiatus and runs in front of the vertebral column

Question 6

What does the Asygous vein proper receive?

Answer 6

Right subcostal vein, ower 7 or 8 right intercostal veins, hemiazygos, accessory hemiazygos veins, and several esophageal, mediastinal, pericardial, and bronchial veins and right superior intercostal veins

Question 7

Where does the Azygos vein empty?

Answer 7

Superior Vena Cava, arches anterosuperiorly to the right primary bronchus to enter the superior vena cava

Question 8

Hemiazygous Vein: Location and pathway

Answer 8

Begins as a contiuation of the left ascending lumbar vein

Enters the thorax through the left crus of the diaphragm

Question 9

Hemiazygos vein: Drain point

Answer 9

Drains Left subcostal and lover 3 intercostal veins

Question 10

Hemiazygos vein: Emptying point

Answer 10

Crosses TV9 To empty into the azygos vein

Question 11

Accessory Hemiazygos vein: Drain and Emptying point

Answer 11

Drains the middle intercostal veins on th eleft, crossing TV8 to empy into the azygos vein

Question 12

Azygos System: Purpose

Answer 12

Connects portal and systemic pathways by way of the esophageal veins

Important collateral pathway between superior and inferior venae cavae