Arterial Supply and Venous Drainage of the Trunk

Question 1

What does the aorta consist of?

Answer 1

Ascending aorta
Aortic arch
Descending thoracic aorta
Abdominal arch

Question 2

At what level does the thoracic aorta pierce the diaphragm to become the abdominal aorta?

Answer 2

T12

Question 3

What does the abdominal aorta branch into?

Answer 3

Common iliac arteries which then branch into the internal and external iliac arteries

Question 4

What level is the start and end of abdominal aortic?

Answer 4

T12

Question 5

What level does the bifurcation of abdominal aorta into common iliac arteries happen?

Answer 5

L4

Lie in the iliac fossae

Terminal branches of abdominal aorta

Question 6

What vertebrae level does the bifurcation of the common iliac arteries occur?

Answer 6

L5

Question 7

What are the main branches of the aortic arch?

Answer 7

Brachiocephalic trunk
Left common carotid artery
Left subclavian artery

Question 8

What are the branches of the ascending aorta?

Answer 8

Left and right coronary arteries

Question 9

What are the two branches given off by the brachiocephalic trunk?

Answer 9

Right common carotid artery

Right subclavian artery

Question 10

Main branches of descending thoracic aorta

Answer 10

Posterior intercostal arteries (lying between ribs posteriorly)

Bronchial arteries (oesophageal arteries)

Oesophageal arteries (supplying the tissue of the lungs w oxygenated blood)

Pericardial arteries (supplying other mediastinal structures)

Question 11

Main branches of the abdominal aorta

Answer 11

Common iliac arteries
External iliac arteries
Internal iliac arteries

Question 12

What do external iliac arteries become?

Answer 12

Femoral arteries in thigh

Question 13

What do internal iliac arteries supply?

Answer 13

Pelvis viscera

Question 14

Where do arterial thoracic arteries arise from and where do they lie?

Answer 14

Arise from subclavian arteries
Lie anteriorly and parasternally
Accompanies by internal thoracic veins

Question 15

What do arterial thoracic arteries give off?

Answer 15

Anterior intercostal arteries to intercostal spaces

Question 16

What do branches from the thoracic arteries supply?

Answer 16

Breast
Fibrous pericardium
Parietal pleura
Diaphragm

Question 17

What do arteries have vs veins?

Answer 17

Arteries have branches

Veins have tributaries

Question 18

Greater arteries of heart and greater veins of heart

Answer 18

A - aorta and pulmonary trunk

V - superior vena caba and inferior vena cava

Question 19

What main veins drain blood from the body?

Answer 19

Superior Vena Cva:

• Head
• Neck
• Upper limbs

Inferior Vena Cava:

• Abdominal cavity
• Pelvic cavity
• Lower limb

Question 19

Venous drainage of anterior chest wall

Answer 19

Internal thoracic vein drains anterior intercostal veins to the L + R brachiocephalic veins

Question 20

Venous drainage of posterior chest wall

Answer 20

Azygous venous system

Question 21

What does the azygous venous system drain blood to and from?

Answer 21

Drains from posterior intercostal veins to superior vena cava.

Question 22

What is the main vein of the azygous system?

Answer 22

Azygous vein lying immediately to the right of the descending throacic aorta

Consists of:

Azygous vein - right side
Hemiazygous venous system - left side

Question 23

Where do hemizygous veins drain into?

Answer 23

Azygous vein by crossing from left to right at levels T8/9

Question 24

Which main vein does the azygous drain into?

Answer 24

Superior vena cava

Question 25

What chest wall is drained by the azygous and hemiazygous systems?

Answer 25

Posterior chest wall

Question 26

What chest wall is drained by the azygous and hemiazygous systems?

Answer 26

Posterior chest wall