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Vitamin - a, Biology
VITAMIN - A
Also known as
Retinol / Antixeropthalmic vitamin / Auxerophthol.
It is vitamin for normal vision. It forms retinal pigments rhodopsin & iodopsin.
It is stored in liver.
Its deficiency cause
Its deficiency causes
(Nyctolopia / Henerolopia).
It's deficiency causes
in which cornea becomes dry, keratinization of cornea start, tear formation absent & it may lead to total blindness.
is due to prolonged deficiency of vitamin A, in which keratinization & degeneration of cornea takes place.
Vitamin A prevents keratin deposition in surface cells and glandular epithelium.
Source of vitamin A - carrot, guava, papaya, mango, liver, egg, yolk & cod liver oil.
Posted Date: 10/9/2012 6:11:02 AM | Location : United States
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