Eye embryology Flashcards
1
Q
Originates from surface ectoderm
A
Lens, cornea epithel, conjunctiva epithel, tear gland
2
Q
Originates from neural ectoderm
A
Retina, iris , ciliar object epithel , pupil muscles , optic nerve
3
Q
Originates from mesoderm?
A
Sclera , iris , vitrous object ciliar object , coroid , cornea stroma & endothel , orbita
4
Q
Eye originates from wich sources ?
A
1- prosencephalon neuroectoderm
2- surface ectoderm of head
3- mesoderm between this layers
5
Q
What appears at week 4 and what does it do ?
A
Optic sulcus, optic veside
6
Q
What does lens come from
A
Lens placode
7
Q
Gap betwen two optic vesicle wall?
A
Intranetinal gap
8
Q
Choroid fissur
A
Provides hydloid vein to get in
9
Q
Koloboma ?
A
Choroid fissur closing error
10
Q
- Week layers?
A
Inner & outer neuroblast layers
11
Q
- Week layers ?
A
Inner & outer limiting membran
