Nutrition Quiz Outline

Nutrition Quiz Outline - Nutrition Quiz Fat-soluble...

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Nutrition Quiz Fat-soluble vitamins - Accumulate in the liver and adipose tissue - Excessive intake of A and D can be toxic - Vitamin A o Retinol, retinal, retinoic acid o Stored in the liver o Vision: makes it possible to see in dim light o Cell differentiation: activates receptors in nucleus of stem cells Differentiates cells into epithelial cells that cover and protect external and internal surfaces of the body o Immune: generate immune cells o Reproduction: support reproduction of sperm and maintain fertility in women o Bone health: if deficient bones become thicker but weaker o Found in liver, fish oils, milk fat, dark green and yellow-orange vegetables, and fortified margarine, cereals, and low fat dairy foods o Deficiency: night blindness, rough and bumpy skin, disrupts ability to secrete mucus, growth and development retardation, and increased chance of infection o Toxicity occurs infrequently Fatigue, vomiting, abdominal pain, bone and joint pain, loss of appetite, skin disorders, headache, blurred or double vision, liver damage - Vitamin D o Body can make it when there is adequate sunlight o A vitamin and a hormone o Regulates blood calcium levels, may have anticancer effects, possible treatment for psoriasis, may trigger cell differentiation in certain tissues, o Calcitriol, parathyroid, and calcitonin regulate blood calcium by altering amount of calcium released from the bone, excreted from the kidney, and absorbed form the intestine o Sources: sunlight (time of day, season, environment, location, sunscreen, and skin type…most people make and store enough vitamin D in summer months), fortified milk, breakfast cereal, fish oils, egg yolk, butter, and liver o Deficiency: rickets (skeletal deformities in children), osteomalacia and osteoporosis (increased risk of hip fracture in older adults) o Toxicity: hypercalcemia (excessive urination and thirst, deposits in soft tissues such as kidneys, blood vessels, heart, and lungs), depression, nausea, vomiting, loss of appetite - Vitamin A, D, and E are antioxidants - Vitamin E o Stabilizes cell membranes and defends cells against free radical attack, protects lungs from environmental contaminants, helps prevent cancer,
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This note was uploaded on 04/07/2008 for the course BHS 105 taught by Professor Richmann during the Fall '07 term at Northeastern.

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Nutrition Quiz Outline - Nutrition Quiz Fat-soluble...

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