Question:

Characteristics character of human cornea

Updated On: May 13, 2024
  • Secreted by conjuctiva and glandular
  • It has lacrimal gland which secrete tears
  • Blood circulation is absent in cornea
  • In old age it become harden and white layer deposite on it which causes the cataract
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The Correct Option is C

Solution and Explanation

The characteristic features of the human cornea are as follows: (C) Blood circulation is absent in the cornea. The human cornea is avascular, meaning it lacks blood vessels. It obtains its nutrients and oxygen from the tear fluid on the outside and the aqueous humor on the inside of the eye. This avascularity is essential for maintaining the transparency of the cornea. Option (A) is incorrect because the cornea is not secreted by the conjunctiva or glandular structures. Option (B) is incorrect because the lacrimal gland primarily secretes tears, but it is not a specific characteristic of the cornea. Option (D) is incorrect because the hardening and white layer deposition that leads to cataracts primarily affect the eye's lens, not the cornea. Cataracts involve changes in the lens structure, not the cornea.
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