NEET Previous Year Question
Which of the following statements is correct?
Topic: NEET PYQ
Answer: D. Full step-by-step solution below.
- ACornea is an external, transparent and protective proteinacious covering of the eye-ball.
- BCornea consists of dense connective tissue of elastin and can repair itself.
- CCornea is convex, transparent layer which is highly vascularised.
- DCornea consists of dense matrix of collagen and is the most sensitive portion of the eye.
Correct answer: D
Solution
(d) (a) → Incorrect → The cornea is transparent and protective, but it is not proteinaceous. It is mainly composed of dense connective tissue (collagen).(b) → Incorrect → The cornea consists mainly of collagen fibres, not elastin. It has limited repair ability because it is avascular.
(c) → Incorrect → The cornea is avascular (has no blood vessels), not highly vascularised.
(d) → Correct → The cornea consists of a dense matrix of collagen fibres, is transparent, avascular, and is the most sensitive part of the eye due to its rich nerve supply.
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