Aortic arch derivatives

Question 1

1st arch

Answer 1

maxillary artery, most regress

Question 2

2nd arch

Answer 2

stapedial artery, most regress

Question 3

3rd arch

Answer 3

proximal > common carotid a.

distal > internal carotid a.

Question 4

4th arch

Answer 4

right proximal > right subclavian artery

left > aortic arch

Question 5

5th arch

Answer 5

disappears

Question 6

6th arch

Answer 6

left proximal > part of left pulmonary a.
left distal > ductus arteriosus
right proximal > part of right pulmonary a.
right distal > regresses