Arterial Supply of the Thoracic Wall

Musculophrenic arteries from the internal thoracic arteries

Segmental posterior intercostal arteries directly from the thoracic aorta (correct)

Posterior intercostal arteries from the superior intercostal artery

Anterior intercostal arteries from the internal thoracic arteries

Internal thoracic artery

Musculophrenic artery

Subclavian artery

Superior intercostal artery (correct)

Internal thoracic vein

Brachiocephalic vein (correct)

Musculophrenic vein

Azygos system