Ch. 6 Vitamins Flashcards
Organic, dietary substance not producing energy
vitamin
Fat-soluble vitamins include vitamins ___, __,___,___ and are associated with _____, are easily ______
A,D,E,K
lipids
stored
One vitamin cannot substitute for another ______
vitamin
Water soluble vitamins are vitamin ___ and the ___ complex. These vitamins are more easily absorbed and transported, but cannot be ____ unlike fat soluble vitamins
C
B
stored
Preformed vitamin A (retinol)
- natural form of vitamin A
- found only in animal foods
Vitamin A is stored mainly in the ______ and contains up to ___ percent of the bodys total supply
liver
80 percent
The ability of the eye to adapt to changes in light depends on the light sensitive pigment ________, and is made up of the vitamin ___ molecule.
rhodospin
A
When vitamin A is lacking, the _____ becomes increasingly sensitive to changes in light, causing _____ ______. The condition is reversed with a injection of vitamin A ______
retina
night blindness
retinol
Vitamin A ______ is converted to ______ and then ______
retinol
retinal
rhodospin
Vitamin ___ is essential for the growth of bones and soft tissues
Vitamin A
Poor vitamin A status lowers resistance to _______
infections
A high intake of alcohol results in loss of vitamin ___ from the _____
Vitamin A
liver
-Liver
-milk
-cheese
-butter
-egg yolk
-fish
are examples of
preformed vitamin A
Non animal products containing vitamin A
margarine
cereal
vegetables and fruits
Vitamin D is absorbed where?
small intestines
_______ are more available to the body from cooked than from raw vegetables
Carotenoids
Vitamin D is really a ______, not a vitamin
prohormone
-control of calcium and phosphorus levels in bone and blood
- in endocrine system
- parathyroid hormone, calcitonin
vitamin D
Bone disease, osteoporosis is caused by vitamin __ deficiency
D
- Yeast
- fish liver oils and fatty fish
- small amount in egg yolk
are natural food sources of vitamin _
Vitamin D
- Milk
- margarine
- yogurt and cereal
- some juices
are foods in which vitamin __ is added to
Vitamin D
Vitamin ___ is nature’s most potent antioxidant, yet supplements do not protect against chronic disease.
vitamin E
Premature infants are given vitamin ___ supplements at birth to prevent loss of red blood cells, hemolytic anemia.
vitamin E
-Peanut butter, nuts, certain vegetables and fruits, especially tomatoes, are sources of vitamin ___
vitamin E
