Pharyngeal Arches

Question 1

Which pharyngeal arch includes malleus, incus, sphenomandibular ligament, Meckel’s cartilage, and tympanic ring?

Answer 1

Arch 1

Question 2

Which pharyngeal arch includes stapes, styloid process, stylohyoid ligament, lesser horn of hyoid, part of body of hyoid?

Answer 2

Arch 2

Question 3

Which pharyngeal arch includes greater horn of hyoid, part of body of hyoid?

Answer 3

Arch 3

Question 4

Which pharyngeal arch includes laryngeal cartilages?

Answer 4

Arch 4

Question 5

Which CN is associated with arch 1?

Answer 5

CN V

Question 6

Which CN is associated with arch 2?

Answer 6

CN VII

Question 7

Which CN is associated with arch 3?

Answer 7

CN IX

Question 8

Which CN is associated with arch 4?

Answer 8

CN X

Question 9

Which pharyngeal arch includes muscles of mastication, tensor tympani, mylohyoid, TVP, anterior belly of digastric?

Answer 9

Arch 1

Question 10

Which pharyngeal arch includes muscles of facial expression, stapedius, stylohyoid, posterior belly of digastric?

Answer 10

Arch 2

Question 11

Which pharyngeal arch includes stylopharngeus?

Answer 11

Arch 3

Question 12

Which pharyngeal arch includes pharyngeal and laryngeal musculature?

Answer 12

Arch 4

Question 13

Are pharyngeal clefts external or internal?

Answer 13

External

Question 14

Are pharyngeal pouches external or internal?

Answer 14

Internal

Question 15

Which arch forms the maxillary and mandibular?

Answer 15

Arch 1

Question 16

Which aortic arch contributes to maxillary arteries?

Answer 16

Arch 1

Question 17

Which aortic arch produce stapedial and hyoid arteries: goes away?

Answer 17

Arch 2

Question 18

Which aortic arch: common carotid arteries and proximal portion of the internal carotid arteries?

Answer 18

Arch 3

Question 19

Which aortic arch: on the left side, it persists, connecting the ventral aorta to the dorsal aorta, forming the aortic arch. On the right it forms the proximal portion of the right subclavian artery

Answer 19

Arch 4

Question 20

Which aortic arch: rudimentary and do not develop into any known vessels

Answer 20

Arch 5

Question 21

Which aortic arch: the proximal portions develop into the right and left pulmonary arteries, while the distal portions of the left aortic arch artery develop into the ductus arteriosus

Answer 21

Arch 6

Question 22

According to Stern’s rule, if a muscle has tensor in its name, it is innervated by which CN?

Answer 22

CN V

Question 23

According to Stern’s rule, if a muscle has palato in its name, it is innervated by which CN?

Answer 23

CN X

Question 24

According to Stern’s rule, if a muscle has glossus in its name, it is innervated by which CN?

Answer 24

CN XII

Question 25

 Mandibulo-facial dysostosis
 Underdevelopment of structures associated with Arch 1.
 Autosomal dominant, gene in Ch. 5
 Prenatal testing

Answer 25

Treacher-Collins Syndrome

Question 26

Micro-/Retrognathia, glossoptosis & airway obstruction

Answer 26

Pierre Robin Sequence

Question 27

Which pharyngeal cleft gives rise to the external auditory meatus and canal?

Answer 27

1st pharyngeal cleft

Question 28

What do the 2-4 pharyngeal pouches create?

Answer 28

Cervical sinus

Question 29

Which pharyngeal pouch gives rise to tympanic membrane/Auditory canal, middle ear?

Answer 29

Pouch 1

Question 30

Which pharyngeal pouch gives rise to palatine tonsils?

Answer 30

Pouch 2

Question 31

Which pharyngeal pouch gives rise to inferior parathyroid glands and thymus?

Answer 31

Pouch 3

Question 32

Which pharyngeal pouch gives rise to superior parathyroids and ultimobranchial body?

Answer 32

POuch 4

Question 33

In _____ syndrome, there is a failure of the thymus gland to develop from the third pharyngeal pouch with concurrent absence of parathyroid glands from the third and fourth pharyngeal pouches.

Answer 33

DiGeorge syndrome

Question 34

What is the sensory innervation of anterior 2/3 of tongue?

Answer 34

CN V

Question 35

What is the sensory innervation of posterior 2/3 of tongue?

Answer 35

CN IX

Question 36

What is the innervation of taste buds of anterior 2/3 of tongue?

Answer 36

CN VII

Question 37

What is the innervation of taste buds of posterior 2/3 of tongue?

Answer 37

CN IX and CN X