Pharyngeal Arches and their Derivatives (artery/nerve/muscles)

Question 1

1st Arch

Answer 1

1st Aortic Arch = part of maxillary artery

CN V2/V3

Muscles of Mastication (Masseter/Medial pterygoids/Mylohyloid)
tensor tympani
tensor veli

Question 2

2nd Arch

Answer 2

2nd Aortic Arch = part of hyoid + stapedial artery

CN 7

Muscles of Facial Expression (stapedius/stylohyoid/platysma)

Question 3

3rd Arch

Answer 3

3rd Aortic Arch = common + proximal internal carotid arteries

CN 9

Stylopharyngeus
Hyoid bone

Question 4

4th Arch

Answer 4

4th Aortic Arch = true aortic arch + R subclavian

CN 10

Pharyngeal constrictors/cricothyroid/levator palatini

Question 5

5th Arch

Answer 5

REGRESSES

Question 6

6th Arch

Answer 6

6th Aortic Arch = proximal pulmonary arteries + Ductus Arteriosus

CN 10

intrinsic muscles of larynx (except cricothyroid)