Nutrition 1020 Module #5, #6 with verified solutions 2024
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Course
Nutrition 1020
Institution
Nutrition 1020
What are the characteristics of water soluble vitamins?
Absorbed directly into blood stream
Circulate, travel, store in water compartments
Excrete in urine
Deficiency signs occur more quickly
Toxicity short lived
What are the characteristics of fat soluble vitamins?
Absorbed into lymph...
Nutrition 1020 Module #5, #6
with verified solutions 2024
What are the characteristics of water soluble vitamins? - answer
Absorbed directly into blood stream
Circulate, travel, store in water compartments
Excrete in urine
Deficiency signs occur more quickly
Toxicity short lived
What are the characteristics of fat soluble vitamins? - answer
Absorbed into lymph
Require protein carriers
Associate with fat
Not readily excreted
Deficiency signs occur slowly
Toxicity is longer lived
How is a nutritional deficiency or toxicity diagnosed? - answer
Dietary records
Clinical symptoms
Biochemical tests
Nutrient supplements
What compounds are part of the vitamin A chemistry? - answer
Retinol
Retinal
Retinoic acid
,Beta-carotene
What are the functions of vitamin A? - answer Vision
Epithelial cells (external and internal linings)
Growth
Reproduction
Embryonic development
Gene expression
Immune function
Antioxidant
What is a deficiency of vitamin A called and what are the symptoms?
- answer Hypovitaminosis A
Impaired bone and tooth growth
Night blindness
Complete blindness
Diarrhea
Depressed immunity
Hyperkeratosis
What is the DRI of vitamin A? - answer 700-900 micrograms
What are the signs of vitamin A toxicity? - answer Decreased bone
mineral density
Headache
vertigo
Nausea and vomiting
Liver abnormalities
Uncoordinated
,Orange color skin
What are good food sources of vitamin A? - answer Animal for
retinol
Fortified milk, cheese, butter, margarine
Eggs
Liver
Dark leafy green vegetables
Broccoli
Deep orange fruits and vegetables
What is vitamin D used for? - answer Increases bone mineralization
Intestinal absorption of calcium
Phosphorus excretion
Cell metabolism
What is the DRI of vitamin D? - answer 15 micrograms per day
What is a vitamin D deficiency called and what are the symptoms? -
answer Rickets in children
Osteomalacia in adults
Poor bone and tooth growth
Bowed legs
Soft bones
Pigeon chest
Knocked knees
Porous bones
Decreased calcium absorption
Decreased circulating phosphorus
, What are the symptoms of hypervitaminosis D? - answer High blood
calcium
Weakness
Nausea and vomiting
Anorexia
Kidney stones
Thirst
Increased Urination
Increased urinary calcium
What are some good sources of vitamin D? - answer Fortified milk,
margarine, some cereals
Eggs
Fatty fish
Self synthesis from sunlight exposure
What are the functions of vitamin E? - answer Membrane
antioxidant
Membrane stabilizer
What is the DRI of vitamin E? - answer 15 micrograms per day
What are the signs of vitamin E deficiency? - answer Hemolytic
anemia in premature infants
Not well documented in adults
What are the signs of vitamin E toxicity? - answer Interferes with
vitamin K role in clotting
Interacts with anticoagulants
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