FREE MCI MCQ on 01 December 2016

MCI

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 DAILY FREE MCQ CHALLENGE for Medical PG Preparation

Question
Optic cup develops into which among the following?
A. Lens
B. Cornea
C. Retina
D. Sclera

TIPSImportant Question from MCI 2012

Answer : C. Retina

Explanation : 

The eye is derived from three of the primitive embryonic layers: surface ectoderm, including its derivative the neural crest; neural ectoderm; and mesoderm. The neural ectoderm gives rise to the optic vesicle and optic cup, and is thus responsible for the formation of the retina and retinal pigment epithelium.

now

  • As the optic vesicle invaginates to produce the optic cup, the original outer wall of the vesicle approaches its inner wall.
  • The outer layer of the optic cup remains as a single layer and becomes the pigment epithelium of the retina.
  • The inner layer of the optic cup undergoes a complicated differentiation into the other nine layers of the retina.

Reference : Chapter 1. Anatomy & Embryology of the Eye. In: Riordan-Eva P, Cunningham ET, Jr. eds. Vaughan & Asbury’s General Ophthalmology, 18e, Reference link

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