Great Vessel Embryology

Question 1

1 st aortic arch

Answer 1

maxillary arteries

Question 2

2nd aortic arch

Answer 2

stapedial arteries

Question 3

3rd aortic arch

Answer 3

Proximal: common carotid artery
Distal: internal carotid artery (dorsal aorta also contributes)

Question 4

4th aortic arch

Answer 4

Left: some arch of the aorta (most proximal is from aortic sac)

Right: proximal subclavian artery
(mid subclavian is right dorsal aorta, distal is 7th segmental branch)

Question 5

5th aortic arch

Answer 5

degenerates as soon as it forms

Question 6

6th aortic arch

Answer 6

Right: right pulmonary artery

Left:
Proximal: L pulmonary artery
Distal: remains as ductus arteriosum