Development of the Eye, Tongue, and Tooth

Question 1

The retina and optic nerve are derived from _________

Answer 1

• neuroectoderm

Question 2

The lens placodes, lacrimal gland, corneal epithelium and conjunctival epithelium are derived from _________

Answer 2

• surface ectoderm

Question 3

The sclera and choroid are derived from _________

Answer 3

• mesoderm

Question 4

The smooth muscle of the iris is derived from _________

Answer 4

• ectoderm

Question 5

The ocular muscle is derived from __________

Answer 5

• paraxial mesoderm

Question 6

The optic vesicle develops as a lateral outgrowth of the _________

Answer 6

• diencephalon (forebrain)

Question 7

The optic cup gives rise to the pigmented and sensory layers of the _______

Answer 7

• retina

Question 8

The lateral swelling and median tuberculum impar of the tongue develop from the first pharyngeal arch in the _________ of the tongue

Answer 8

• rostral 2/3

Question 9

The (Rostral 2/3) body of the tongue is lined by _____________

Answer 9

• stomodeal ectoderm

Question 10

The rostral and caudal part of the tongue are separated by _________

Answer 10

• terminal sulcus

Question 11

The root of the tongue is lined by ________

Answer 11

• endoderm

Question 12

The ________ of the tongue is derived from the 2,3,4 pharyngeal arches

Answer 12

• caudal 1/3

Question 13

The hypobranchial eminence forms the _____________

Answer 13

• root of the tongue (caudal 1/3)

Question 14

The striated muscles of the tongue develop from ________

Answer 14

• occipital somites = paraxial mesoderm

Question 15

Dental lamina develops from ________

Answer 15

• oral ectoderm

Question 16

The dental papilla develops from ________

Answer 16

• the mesenchyme of neural crest cells