Pharyngeal Arches

Question 1

Arch 1 (Arteries)

Answer 1

Terminal branch of maxillary artery

Question 2

Arch 2 (Arteries)

Answer 2

Stapedial artery (embryonic), corticotympanic artery (adult)

Question 3

Arch 3 (Arteries)

Answer 3

Common carotid artery, root of internal carotid

Question 4

Arch 4 (Arteries)

Answer 4

Arch of aorta, right subclavian artery

Question 5

Arch 6 (Arteries)

Answer 5

Ductus arteriosus, roots of definitive pulmonary arteries

Question 6

Arch 1 (Skeletal)

Answer 6

Incus, malleus, maxilla, zygomatic, temporal bone, mandible

Question 7

Arch 2 (Skeletal)

Answer 7

Stapes, styloid, part of hyoid

Question 8

Arch 3 (Skeletal)

Answer 8

Part of hyoid

Question 9

Arch 4 (Skeletal)

Answer 9

Laryngeal cartilages (thyroid, cuneiform, corniculate, cricoid) Possibly epiglottis

Question 10

Arch 6 (Skeletal)

Answer 10

Laryngeal cartilages (thyroid, cuneiform, corniculate, cricoid)

Question 11

Arch 1 (Muscles)

Answer 11

Muscles of mastication (temporalis, masseter, pterygoids), mylohyoid, anterior belly of the digastric, tensor tympani

Question 12

Arch 2 (Muscles)

Answer 12

Muscles of facial expression (orbicularis oculi, orbicularis oris, platysma, frontalis, buccinator), posterior belly of digastric, stylohyoid, stapedius

Question 13

Arch 3 (Muscles)

Answer 13

Stylopharyngeus

Question 14

Arch 4 (Muscles)

Answer 14

Constrictors of pharynx

Question 15

Arch 6 (Muscles)

Answer 15

Intrinsic muscles of larynx

Question 16

Arch 1 (Cranial Nerves)

Answer 16

Trigeminal nerve (V)

Question 17

Arch 2 (Cranial Nerves)

Answer 17

Facial Nerve (VII)

Question 18

Arch 3 (Cranial Nerves)

Answer 18

Glossopharyngeal nerve (IX)

Question 19

Arch 4 (Cranial Nerves)

Answer 19

Superior laryngeal branch of vagus nerve (X)

Question 20

Arch 6 (Cranial Nerves)

Answer 20

Recurrent laryngeal branch of vagus nerve (X)