Trunk Anatomy

Question 1

posterior intercostal arteries

Answer 1

branch off from descending aorta between each rib

Question 2

internal thoracic arteries

Answer 2

branch off from each subclavian artery (resulting in right and left arteries)

Question 3

anterior intercostal arteries

Answer 3

branch off from internal thoracic arteries

Question 4

azygos vein

Answer 4

drained into by intercostal veins, drains into superior vena cava

Question 5

hemiazygos vein

Answer 5

branch off from azygos vein below

Question 6

internal thoracic veins

Answer 6

drain into the subclavian veins

Question 7

common iliac arteries

Answer 7

branch off from abdominal aorta

Question 8

coeliac trunk

Answer 8

top of the aorta, from which other arteries branch off from

Question 9

superior mesenteric artery

Answer 9

branches off from aorta just inferior to coeliac trunk, supplied GI system

Question 10

renal arteries

Answer 10

branch off inferior to SMA

Question 11

gonadal arteries

Answer 11

branch off inferior to renal arteries, supply testes/ovaries

Question 12

inferior mesenteric artery

Answer 12

branches off inferior to gonadal arteries, supplies GI tract

Question 13

internal iliac artery

Answer 13

remains internal within the pelvis, branches off from commonn

Question 14

external iliac artery

Answer 14

forms the femoral artery

Question 15

external and internal iliac veins

Answer 15

drain into the common iliac vein

Question 16

common iliac vein

Answer 16

drains into the inferior vena cava

Question 17

inferior and superior iliac veins

Answer 17

drain into the hepatic portal vein so toxins/unmetabolised drugs can be filtered out of blood from the GI tract (via a two capillary bed system) in the liver

Question 18

hepatic portal vein

Answer 18

drains into the inferior vena cava