Aortic Arch Derivatives

Question 1

What do aortic arches develop into (in general)

Answer 1

arterial system

Question 2

1st aortic arch

Answer 2

maxillary artery 
(branch of external carotid)

Mnemonic : 1st is Maximal

Question 3

2nd aortic arch

Answer 3

Stapedial artery and hyoid artery

Mnemonic: Second= Stapedial

Question 4

3rd aortic arch

Answer 4

Common Carotid artery and proximal part of internal Carotid artery

C= 3rd letter of the alphabet
(Coom Carotid, and internal Carotid ( 3 c’s))

Question 5

4th aortic arch

Answer 5

on the left: aortic arch

on the right: proximal part of right subclavian artery ( R. recurrent laryngeal n.)

Mnemonic: 4th arch (4 limbs) = SYSTEMIC

Question 6

6th aortic arch

Answer 6

proximal part of Pulmonary arteries (on left)

on right: ductus arteriousus (turns into ligamentum areriosum shortly after birth) – L. recurrent laryngeal n.

mnemonic: 6th arch = pulmonary and the pulmonary to systemic shunt