Exam (elaborations)
HOSA NUTRITION: VITAMINS EXAM GUIDE QUESTIONS WITH COMPLETE ANSWERS
- Course
- Institution
HOSA NUTRITION: VITAMINS EXAM GUIDE QUESTIONS WITH COMPLETE ANSWERS
[Show more]
Content preview
HOSA NUTRITION: VITAMINS EXAMGUIDE QUESTIONS WITH COMPLETE
ANSWERS
Three functions of vitamins - Answer-1. Metabolism: coenzymes form enzymes which
catalyze metabolic reactions, are derived from vitamins
2. Tissue structure and protection: some vitamins are involved in tissue or bone building
3. Prevention of deficiency disease
Antioxidant - Answer-Molecule that prevents oxidation of cellular structure by free
radicals
Collagen - Answer-Protein that adds tensile strength to body structures
How are fat-soluble vitamins absorbed? - Answer-1. Intestinal cells absorb them with
dietary fat as micelle, incorporate all fat-soluble nutrients into chylomicrons which enter
circulation
2. Absorption enhanced by fat
3. Can be stored for longer period of time in adipose tissue, and thus accumulation +
excess intake = toxicity
How are water-soluble vitamins absorbed? - Answer-1. Vitamins move directly into
portal blood circulation, no need for carrier proteins
2. Not usually stored, requires greater intake
Forms of vitamin A - Answer-1. Retinol, retinal, retinoic acid
2. Provitamin A (carotene)
Functions of vitamin A [4] - Answer-1. Vision cycle: adaptation to light and dark
2. Tissue group, especially skin and mucous membranes
3. Reproduction
4. Immune function
Recommended intake of vitamin A for adults - Answer-Men: 900mcg/day
Women: 600mcg/day
Deficiency of vitamin A symptoms [4] - Answer-1. Night blindness
2. Xerosis, xerophthalmia
3. Susceptibility to epithelial infection, dry skin
4. Impaired immunity, growth, and reproduction
Xerosis - Answer-Dry skin
, Xerophthalmia - Answer-Dry eyes
Tolerable UL of vitamin A - Answer-3000 mcg/day
Symptoms of toxicity of vitamin A [5] - Answer-1. Hair loss
2. Irritated skin
3. Bone pain
4. Liver damage
5. Birth defects
Forms of vitamin D - Answer-Cholecalciferol, ergocalciferol
Functions of vitamin D [3] - Answer-1. Absorption of calcium and phosphorus
2. Calcification of bones and teeth
3. Growth
Recommended intake of vitamin D - Answer-Between 1-70: 600 IU/day
70+: 800 IU/day
Symptoms of deficiency of vitamin D [2] - Answer-1. Rickets and growth retardation in
children
2. Osteomalacia (soft bones) in adults
UL of vitamin D - Answer-1000 - 4000 IU/day
Symptoms of toxicity of vitamin D [3] - Answer-1. Calcification of soft tissue
2. Kidney damage
3. Growth retardation
Sources of retinol - Answer-Animal foods
1. Liver
2. Egg yolk
3. Cream, butter, fortified margarine, fortified milk
Sources of provitamin A - Answer-Plant foods
1. Dark green and deep orange vegetables
2. Ex. spinach, collard greens, broccoli, pumpkin, sweet potatoes, carrots
Sources of vitamin D - Answer-1. Synthesis in skin with exposure to UV light (sun)
2. Fortified milk, fish oils
Forms of vitamin E - Answer-Alpha-tocopherol
Function of vitamin E - Answer-Antioxidant
Recommended intake of vitamin E - Answer-15 mg/day for adults
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller biggdreamer. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67866 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
