Branchial Arch Derivatives

Question 1

Muscles of Mastication

Answer 1

Arch 1

Question 2

Mylohyoid m.

Answer 2

Arch 1

Question 3

Anterior belly of Digastric m.

Answer 3

Arch 1

Question 4

Tensor veli palatine m.

Answer 4

Arch 1

Question 5

Tensor tympani m.

Answer 5

Arch 1

Question 6

Cartilages: Malleus and Incus

Answer 6

Arch 1

Question 7

Anterior Ligament of malleus

Answer 7

Arch 1

Question 8

Sphenomandibular ligament

Answer 8

Arch 1

Question 9

Pharyngotympanic tube - pouch

Answer 9

Arch 1

Question 10

Typmanic cavity - pouch

Answer 10

Arch 1

Question 11

Mastoid antrum - pouch

Answer 11

Arch 1

Question 12

External acoustic meatus - groove

Answer 12

Arch 1

Question 13

Tympanic membrane

Answer 13

Arch 1

Question 14

Which nerve controls arch 1?

Answer 14

CN V (Trigeminal)

Question 15

Muscles of Facial expression

Answer 15

Arch 2

Question 16

Stapedius m.

Answer 16

Arch 2

Question 17

Stylohyoid m.

Answer 17

Arch 2

Question 18

Posterior belly of digastric m.

Answer 18

Arch 2

Question 19

Stapes - cartilage

Answer 19

Arch 2

Question 20

Styloid process- cartilage

Answer 20

Arch 2

Question 21

Lesser cornu and upper body of hyoid - cartilage

Answer 21

Arch 2

Question 22

Tonsillar sinus/fossa - pouch

Answer 22

Arch 2

Question 23

Endoderm –> crypts - pouch

Answer 23

Arch 2

Question 24

Which nerve controls Arch 2?

Answer 24

CN VII (Facial)

Question 25

Stylopharyngeus m.

Answer 25

Arch 3

Question 26

Greater comu and lower body of hydoid - cartilage

Answer 26

Arch 3

Question 27

Inferior parathyroid gland - pouch

Answer 27

Arch 3

Question 28

Thymus - pouch

Answer 28

Arch 3

Question 29

Which nerve controls Arch 3?

Answer 29

CN IX (Glossopharyngeal)

Question 30

Which nerve controls Arch 4?

Answer 30

CN X (Vagus) - Superior Laryngeal

Question 31

Which nerve controls Arch 6?

Answer 31

CN X (Vagus) - Recurrent Laryngeal

Question 32

Cricothyroid m

Answer 32

Arch 4

Question 33

Levator veli palatini m.

Answer 33

Arch 4

Question 34

Pharyngeal constrictor mm.

Answer 34

Arch 4

Question 35

Intrinsic muscles of larynx

Answer 35

Arch 6

Question 36

Laryngeal cartilages: Thyroid, Cricoid, Arytenoid, Corniculate, Cuneiform

Answer 36

Arch 4&6

Question 37

Superior Parathyroid gland - pouch

Answer 37

Arch 4&6

Question 38

Ultimopharyngeal body --> parafollicular cells of thyoid gland - pouch

Answer 38

Arch 4&6

Question 39

Which pharyngeal arch membrane is the only one to contribute to an adult structure?

Answer 39

Arch 1

Question 40

Source of mesenchyme in the pharyngeal arches is from which precursor?

Answer 40

Neural crest cells