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Vitamin a is also known as
Retinol
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1 micro gram of retinal is equal to
12 beta karotine
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functions of vitamin A
- Supports reproduction
- Regulates growth by breaking down bone
- helps vision maintenance of cornea and other cells
- Carries Oxygen to the Cornea
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osteoclast
Break apart bone
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opsin
Combines with vitamin A to make rhodopsin which is a chemical that aids in vision
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How does Vitamin A get to the body
has Retinol binding proteins
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Vitamin A sources
milk, egg yolks, animal fats, butter, any type of fat from animals, or you can get its precursor from fruits and vegetables
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Vitamin A Deficiency
- Night blindness- eyes cannot adjust very well to different levels of light
- Bitots spots
- Karatomalacia
- Xerosis
- Xerophthalmia
- impaired immunity
- plugging of hair follicles with keratin forming white lumps
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Toxicity of Hypervitaminosis A
- blurred vison
- birth defects
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Sir Douglas Mawson
traveled to the South Pole and ran out of food, had to eat the sled dogs and his men died from to much vitamin A
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Vitamin D name
calciferol
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precursor of Vitamin D
Cholesterol
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Vitamin D DRI
5 to 15 micro grams a day
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Vitamin D sources
- Sunlight
- Fortifies milk, margarine, butter, cereals, and chocolate mixes
- veal, beef, egg yolks, liver, fatty fish (herring, salmon, sardines)
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how the body makes vitamin D
Cholesterol is under thsi skin and with the help of sunlight is able to create vitamin d that will need to go through a few more reactions before it can be used by the body
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Vitamin D deficiency
- Rickets, most prominently in children
- Osteomalacia in adults and increases your risk of developing osteoporosis
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beading on the ribs during rickets
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Sources of Vitamin E
Good fats, oil
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Other facts about vitamin E
- Easily destroyed by heat and oxogyn
- Toxicity can effect blood clotting medecine
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Deficiancy of Vitamin D
- Hemolytic anemia
- Red blood cell breakage
- Nerve damage
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vitamin K functions
- aids in blood clotting
- promotes synthesis of blood clotting proteins
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vitamin K sources
- Liver
- Leafy Green Vegetables
- Cabbage-type vegetables
- milk
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what two vitamins can be made in the GI tract
Biotin and Vitamin K
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