eye embryology

Question 1

The eyes first appear as:

Answer 1

optic vesicles, lateral outgrowths from the forebrain

Question 2

The optic stalk becomes the:

Answer 2

optic nerve

Question 3

vesicle and surface ectoderm come together to form:

Answer 3

lens placode

Question 4

lens placode invaginates to become:

Answer 4

lens vesicle

Question 5

optic vesicle indentation forms the:

Answer 5

optic cup

Question 6

optic cup gives rise to the:

Answer 6

retina

Question 7

outer layer of optic cup gives rise to:

Answer 7

pigmented layer of retina

Question 8

inner layer of optic cup gives rise to:

Answer 8

neural layer of retina

Question 9

inner and outer layers of optic cup combine to give rise to:

Answer 9

iris and ciliary body

Question 10

rim of optic cup gives rise to:

Answer 10

pupil

Question 11

what travels in the choroidal fissure?

Answer 11

hyaloid artery, supplies lens and developing retina

Question 12

hyaloid artery becomes:

Answer 12

central artery of retina

Question 13

coverings of the eye come from:

Answer 13

neural crest/ectomesenchyme

Question 14

structures that come from surface ectoderm:

Answer 14

• conjunctival sac
• epidermis of eyelid
• corneal epithelium
• lens

Question 15

structures from ectomesenchyme:

Answer 15

• sclera
• choroid (uveal layer)
• dura mater
• dermis of eye
• corneal stroma and endothelium
• suspensory ligament

Question 16

structures from neuroectoderm:

Answer 16

• retina
• optic nerve
• iris
• ciliary body

Question 17

structures from lateral plate mesoderm:

Answer 17

hyaloid artery (central artery of retina)