THORAX- ARTERIES THORACIC WALL

Question 1

posterior intercostal arteries- origin

Answer 1

superior intercostal artery

• intercostal space 1 and 2 AND thoracic aorta (remaining spaces)

Question 2

posterior intercostal arteries- course

Answer 2

pass between internal and innermost intercostal muscles

Question 3

posterior intercostal arteries- distribution

Answer 3

intercostal muscles, overlying skin, parietal pleura

Question 4

anterior intercostal arteries- origin

Answer 4

internal thoracic

• intercostal spaes 1-6 AND musculophrenic arteries (spaces 7-9)

Question 5

anterior intercostal arteries- course

Answer 5

pass between internal and innermost intercostal muscles

Question 6

anterior intercostal arteries- distribution

Answer 6

intercostal muscles, overlying skin, parietal pleura

Question 7

internal thoracic artery- origin

Answer 7

subclavian artery

Question 8

internal thoracic artery- course

Answer 8

pass inferiorly and lateral to sternum
BETWEEN costal cartilages and transversus thoracic muscle to DIVIDE INTO superior epigastric and musculophrenic arteries

Question 9

internal thoracic artery- distribution

Answer 9

to intercostal spaces 1-6 and musculophrenic artery

Question 10

subcostal- origin

Answer 10

thoracic aorta

Question 11

subcostal- course

Answer 11

along inferior border of 12th rib

Question 12

subcostal- distribution

Answer 12

muscles of anterolateral abdominal wall