6. Intercostal Arteries

Question 1

Identify 1 → 2

Answer 1

1. Dorsal branch of posterior intercostal artery
2. Posterior intercostal artery

Question 2

Identify 3 → 5

Answer 2

3. Lateral cutaneous branch of posterior intercostal artery
4. Anterior intercostal arteries
5. Superior epigastric artery

Question 3

Identify 6 → 9

Answer 3

6. Internal thoracic artery
7. Thoracic aorta
8. Right posterior intercostal arteries (cut)
9. Sympathetic trunk

Question 4

Posterior intercostal arteries arise from the (1)____ bilaterally and course along the (2)____ margin of each rib between the (3)___ and (4)___.

→ At the midaxillary line, these intercostal vessels give rise to a (5)___.

→ Anteriorly, the intercostal vessels anastomose with the (6)___ arising from the (7)___

Answer 4

1. thoracic aorta
2. inferior margin
3. innermost intercostal muscles
4. internal intercostal muscles
5. lateral cutaneous artery
6. anterior intercostal arteries
7. internal thoracic (mammary) artery.

Question 5

____ also course with the intercostal arteries

Answer 5

Intercostal veins and nerves