Venous drainage of the thorax

Question 1

Question 2

Question 3

Internal thoracic veins arise from the

Answer 3

superior epigastric vein

Question 4

Internal thoracic veins accompanies the

Answer 4

internal thoracic artery

Question 5

Internal thoracic veins
terminate by

Answer 5

draining into the right and the left brachiocephalic vein

Question 6

Azygos vein opens into the ______ at the level of _____

Answer 6

SVC
T4/5

Question 7

Majority of IVC found in the

Answer 7

abdomen

Question 8

IVC starts at the level of

Answer 8

L5

Question 9

IVC runs through the diaphragm at

Answer 9

T8

Question 10

IVC has a very short course in the thorax before it

Answer 10

actually drains into the right atrium of the heart

Question 11

Question 12

Forms the collateral pathway between the superior and inferior vena cava

Answer 12

Azygos system of veins

Question 13

Drains blood from the posterior surface of the thorax and abdomen

Answer 13

Azygos system of veins

Question 14

Azygos veins pathway

Answer 14

Ascend in the posterior mediastinum, passing close to the right side of the bodies of the inferior 8 thoracic vert.
Arches over the superior aspect of the root of the right lung to join the SVC

Question 15

hemiazygos vein pathway

Answer 15

Arises on the left side, by the junction of the left subcostal and ascending lumbar vein
It ascends on the left side of the vertebral column, posterior to the thoracic aorta.
At the T9 vert. it crosses to the right, posterior to the aorta, thoracic duct and oesophagus and joins the azygos vein.

Question 16

Accessory hemiazygos vein

Answer 16

begins at the medial end of the 4th and 5th intercostal space and ascends on the left side of the vert. column (T5-T8).
It crosses over at T7/8, posterior to the thoracic aorta/ thoracic duct, where it joins the azygos vein.
Sometimes the hemi- and accessory hemiazygos vein join and open together in the azygos vein

Question 17