Vitamins-Fat Soluble Flashcards
What vitamin is stored in the liver but has a precursor stored in fat?
Vitamin A
What is the vitamin found in liver, fish oil and in orange & yellow plant material?
Vitamin A
What is vitamin A used for in the body?
Cell synthesis and vision
What pigment is responsible for rods and sight in dim light?
Rhodopsin
What pigment is responsible for comes and sight in colour and bright light?
Iodopsin
A deficiency in what causes night blindness?
Vitamin A
What vitamin can be toxic but it’s precursor is not?
Vitamin A
What is the precursor of vitamin A?
Carotenes
What are the three species of animals that have a vitamin A requirement?
Cats, marine birds and SOME mammals
What are the three species of animals that do not require vitamin A in their diet?
Dogs, foxes and mink
What are the two vitamin D derivatives?
D3 - cholecalciferol
D2 - ergocalciferol
Where does cholecalciferol (D3) come from?
UV light on plants
Where does ergo calciferol come from?
UV light on animal skin
What vitamin aids in calcium and phosphate deposition and resorption in bones and teeth?
Vitamin D
Where is vitamin D stored?
In the liver and fat (same as vitamin A)
A deficiency in what vitamin causes rickets?
Vitamin D
What does Rickets cause and what type of animal does it effect?
Soft bones in young animals
A deficiency in what vitamin causes osteomalacia?
Vitamin D
What does osteomalacia cause and what type of animal does it effect?
Brittle bones in adults
What organ activates vitamin D?
The kidney
When is vitamin D required in the diet?
When there is insufficient exposure to uv light, in polar regions, for burrowing animals, nocturnal animals and animals that stay indoors
What vitamin is essential for amphibians, birds, and reptiles?
Vitamin D
What vitamin acts as an antioxidant, prevents the formation of peroxide des and maintains integrity of cellular and sub cellular membranes by preventing lipid peroxidation?
Vitamin E
What is the only place vitamin E is stored?
Fat
Name the vitamin whose deficiency is responsible for nutritional muscular dystrophy specifically in rats
Vitamin E
A deficiency in what vitamin causes infertility in birds by affecting fertility in makes and improper fetal development in females?
Vitamin E
What vitamin K derivative is found in dark green plants?
K1 - phyloquinone
What vitamin K derivative is made from guy bacteria?
K2 - menaquinone
What vitamin K derivative is synthetic?
K3 - menadione
Wha vitamin assists in blood clotting?
Vitamin K
There is minimal storage of what vitamin?
Vitamin K
Warfarin is an inhibitor of what vitamin causing a deficiency?
Vitamin K
A deficiency in vitamin K causes?
Delayed blood clot formation
What are the 4 fat soluble vitamins?
A, D, E, K
