Exam (elaborations)
NR228 Week 4 :Questions And Accurate Answers
- Course
- Institution
NR228 Week 4 :Questions And Accurate Answers
[Show more]
Seller
Follow
Studyhall
Reviews received
Content preview
NR228 Week 4 :Questions And Accurate AnswersWhat Are Vitamins? Right Ans - -nutrients; essential noncaloric, organic
molecules needed in the diet
-referred to as micronutrients, since only small amounts are needed in the
body to perform specific metabolic functions
-act as helpers to get chemical processes done
-act as precursors and turn vitamins into active chemicals
What two categories are vitamins divided into? Right Ans - fat soluble and
water soluble
Fat-soluble vitamins Right Ans - -stored in fat cells, in the liver and near the
liver, for 3 to 6 weeks
-dependent upon dietary fat for absorption
-not excreted as easily as water-soluble vitamins
-do not need to be eaten as often as water-soluble vitamins
Fat-soluble vitamins include: Right Ans - Vitamin A
Vitamin D
Vitamin E
Vitamin K
How are water-soluble vitamins different than fat-soluble vitamins? Right
Ans - water-soluble vitamins:
-less likely to build up in the body, even in large amounts
-excess will exit the body when you urinate
-Toxicity is less likely
fat-soluble vitamins:
-stored in fatty tissue and in the liver
-excess is more likely
Vitamin A Right Ans - -helps with the growth of teeth and bone
-boosts the immune system
-keeps skin cells healthy
-helps the rods and cones in the eyes stay healthy
-helps with night vision
,-may help decrease the probability of skin cancer and any cancer with the
epithelial cells
Top 10 Vitamin A Foods Right Ans - Carrots
Kale
Pumpkin
Liver
Prunes
Cantaloupe
Grapefruit
Cheese
Broccoli
Eggs
Vitamin A Deficiency causes: Right Ans - -night blindness (first indication
of deficiency)
-xerophthalmia (dry, thickened condition of the conjunctiva)
-keratomalacia (deterioration of the cornea)
-blindness (severe deficiency)
-Insomnia
-Acne
-Dry Hair
-Hyperkeratosis
-Fatigue
-Weight Loss
-Immune Impairment
-Growth Impairment
Vitamin A excess causes: Right Ans - -weakness
-anorexia
-vomiting
-enlarged spleen and liver
Vitamin D Right Ans - - can be made by the body, help of the sun
-supports strong bones, growth, and development
-regulates calcium and phosphorus
-assists with bone mineralization
-Children under 5 should take a vitamin D supplement
-can help: Immune impairment, Joint pain, Mood swings, Muscle weakness
,Vitamin D Foods Right Ans - -Salmon & other oily fish
-liver & eggs
-Salmon
-Mackerel
-Eggs
-Sardines
-Caviar
Vitamin D Deficiency causes: Right Ans - Deficiency causes:
-rickets in children
-osteomalacia in adults
-Vitamin D toxicity manifests as hypercalcemia and hypercalciuria.
Vitamin E Right Ans - Physiological actions:
-protects cell walls
-supplement use is contraindicated with anticoagulation drugs (risk for
bleeding).
-plant-based vegetable oils
-whole grains
-seeds
-nuts
-green, leafy vegetables
Vitamin E Deficiency Signs and Symptoms Right Ans - Anemia
Hair loss
Muscle weakness
Leg cramps
Cancer
Blindness
Dry skin
Fertility problems
Immune impairment
Vitamin K Right Ans - -involved with blood clotting and keeps the
thrombocytes (platelets) healthy
-required for synthesis of prothrombin and other clotting factors (VII, IX, and
X)
-formation of protein
, -produced in the intestinal tract by bacteria
-warfarin overdose (reversal agent used)
-Improves brain function
-Protects against cancer
-Supports heart health
-Reduces menstrual flow
-Responsible for building bones
Best Sources of Vitamin K Right Ans - Cucumber
Asparagus
Prunes
Broccoli
Lettuce
Brussels sprouts
Green onion
Kale
Vitamin K Deficiency causes: Right Ans - -Bleeding: Newborns receive
some vitamin K from the mother at birth and they also receive a vitamin K
injection after delivery
-Newborns are born with a sterile gut and cannot produce vitamin K on their
own
Fat Soluble Vitamins: Infants Right Ans - -unable to immediately produce
vitamin K as they do not have any intestinal flora "good gut bacteria" which
helps produce vitamin K
-they receive an injection after birth
Fat Soluble Vitamins: Children & Adults Right Ans - -deficiency of vitamin D
can lead to the disorders rickets (children) and osteomalacia (adults)
-risk of rickets has increased among breastfed, dark-skinned infants and
toddlers of African and Asian descent, especially in northern areas such as
Canada and Alaska
Fat Soluble Vitamins: Older Adults Right Ans - -their skin is less effective in
synthesizing it during sun exposure to meet their nutritional needs
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 Studyhall. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $24.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
52355 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now