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Vitamin A - Coggle Diagram
Vitamin A
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PROPERTIES OF RETINOL
yellow, fat-soluble alcohol
heat stable, but affected by prolonged high temperatures
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EFFECTS OF DEFICIENCY
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follicular hyperkeratosis - condition resulting in rough, dry skin and inflamed hair follicles
xerophthalmia - occurs on the surface of the eye due to lack of mucous, causes eyes to dry out and become infected with bacteria and can eventually lead to blindness
stunted or delayed growth in children, leaving them smaller in height than the average
risk of damage to cells by free radicals, increasing the risk of some cancers, CHD, and strokes
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BIOLOGICAL FUNCTIONS
manufacture the pigment rhodopsin found in the retina, which helps the eye adapt to dim light
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beta-carotene acts as a powerful antioxidant that can counteract the damaging effects of free radicals
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SOURCES OF BETA-CAROTENE
yellow, orange, green fruits and vegetables
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