Lecture 3: Development Of The Face And Pharynx

Question 1

Which pharyngeal arch is transient or non-existing?

Answer 1

Five (V)

Question 2

Which part of the mesoderm contributes to the floor of the brain case, connective tissue of posterior head, meninges caudal to prosencephalon and all voluntary cranio-facial muscles?

Answer 2

The paraxial mesoderm.

Question 3

Which pharyngeal arch develops into the mandible, incus and malleus?

Answer 3

First pharyngeal arch.

Question 4

Which two pharyngeal arches develop into the larynx?

Answer 4

Fourth and sixth pharyngeal arches.

Question 5

Which cranial nerve innervates the third pharyngeal arch?

Answer 5

The glossopharyngeal nerve.

Question 6

Are the pharyngeal clefts or pouches the internal or external dips?

Answer 6

Clefts = external
Pouches = internal

Question 7

Which pharyngeal pouch develops into the auditory tube?

Answer 7

The first pharyngeal pouch.

Question 8

What develops from the foramen caecum?

Answer 8

The thyroid.

Question 9

The maxillary and mandibular prominences develop from which pharyngeal arch?

Answer 9

The first pharyngeal arch.

Question 10

Which shelves form the secondary palate?

Answer 10

Palatine shelves