Aortic arch + branchial apparatus derivatives

Question 1

1st aortic arch

Answer 1

Part of maxillary artery

Question 2

2nd aortic arch

Answer 2

Stapedial artery, hyoid artery

Question 3

3rd aortic arch

Answer 3

Common carotid artery; proximal part of ICA

Question 4

4th aortic arch

Answer 4

Left: aortic arch
Right: proximal part of right subclavian artery

Question 5

5th aortic arch

Answer 5

Nothing!

Question 6

6th aortic arch

Answer 6

Both sides: Proximal part of pulmonary arteries

Left only: ductus arteriosus

Question 7

1st branchial cleft

Answer 7

External auditory meatus

Question 8

2-4th branchial clefts

Answer 8

Temporary cervical sinuses (later obliterated)

Question 9

1st branchial arch: cartilage?

Answer 9

Meckel cartilage:
Mandible
Malleus
Incus
Spheno-mandibular ligament

Question 10

1st branchial arch: muscles?

Answer 10

MAST-MATT:
Muscles of mastication:
-temporalis
-masseter
-lateral pterygoid
-medial pterygoid
Myelohyoid
Anterior belly of digastric
Tensor tympani
Tensor veli palatini

Question 11

1st branchial arch: nerves?

Answer 11

CN V2 and V3

Question 12

2nd branchial arch: cartilage?

Answer 12

Reichert cartilage:
Stapes
Styloid process
Lesser horn of hyoid
Stylohyoid ligament

Question 13

2nd branchial arch: muscles?

Answer 13

Muscles of facial expression
Stapedius
Stylohyoid
Platysma
Posterior belly of digastric

Question 14

2nd branchial arch: nerve?

Answer 14

CN 7

Question 15

3rd branchial arch: cartilage?

Answer 15

Greater horn of hyoid

Question 16

3rd branchial arch: muscle?

Answer 16

Stylopharyngeus

Question 17

3rd branchial arch: nerve?

Answer 17

CN 9

Question 18

4th-6th branchial arches: cartilage?

Answer 18

Thyroid
Cricoid
Arytenoids
Corniculate
Cuneiform

Question 19

4th branchial arch: muscles?

Answer 19

Most pharyngeal constrictors
Cricothyroid
Levator veli palatini

Question 20

4th branchial arch: nerve?

Answer 20

CN 10: superior laryngeal branch

Question 21

5th branchial arch?

Answer 21

Nuttin

Question 22

Which arches form posterior 1/3 of tongue?

Answer 22

3 + 4

Question 23

6th branchial arch: muscles?

Answer 23

All intrinsic muscles of larynx except cricothyroid

Question 24

6th branchial arch: nerve?

Answer 24

CN 10: recurrent laryngeal branch

Question 25

1st branchial pouch?

Answer 25

Middle ear cavity
Eustachian tube
Mastoid air cells

Question 26

2nd branchial pouch?

Answer 26

Epithelial lining of palatine tonsils

Question 27

3rd branchial pouch?

Answer 27

Dorsal wings: inferior patathyroids

Ventral wings: thymus

Question 28

4th branchial pouch?

Answer 28

Dorsal wings: superior parathyroids