Intercostal Vessels and NervesDr. Hassan Shaibah

Intercostal a.1)Posterior intercostal a.

• first 2 spaces from superior intercostal a., a branch of the of the subclavian a.

• lower 9 spaces from descending thoracic aorta

1

2

Posterior intercostal a.

costocervical trunk

Intercostal a.

Posterior intercostal • Lower 9 space

descending thoracic aorta

Intercostal a.2)The anterior intercostal a• first 6 spaces internal thoracic artery

subclavian a. • lower spaces from musculophrenic

a. from -internal thoracic artery.

internal thoracic a

subclavian a.

Ant. intercostal a

Intercostal a.2)The anterior intercostal alower spaces from musculophrenic a. -internal thoracic artery.

musculophrenic a

Sup. epigastric a.

VeinsPost. intercostal V. drain into azygos or hemiazygos v.

Ant. intercostal v. drain into internal thoracic &

musculophrenic v

Branch of intercostal nerve

Intercostal n.

Lateral cutaneous

Ant.cutaneous

Parietalpleura

Muscular

Post. Rami.