Review questions from slides - fat soluble vitamins Flashcards Preview

Nutrition > Review questions from slides - fat soluble vitamins > Flashcards

Flashcards in Review questions from slides - fat soluble vitamins Deck (36)
Loading flashcards...
1

True or false; a vitamin is a organic nutrient

true (only minerals are non-organic)

2

Which hormone causes the gallbladder to contract

CCK

3

True or false; a cantaloupe is a good source of pro-formed Vit A

true (plant sources)

4

How much more pro-formed Vit A is required compared to pre-formed

12

5

What is the most reduced form of Vit A called

Retinol

6

What is the most oxidized form of Vit A called?

Retinoic acid

7

What enzymes are required for vitamin A digestion

proteases and lipases

8

What is the absorptive mechanism used for all fat soluble vitamins

passive diffusion

9

The form of vitamin A transported in chylomicrons is called

retinol ester (RE)

10

True or false; retinol ester (RE) is the storage form of Vit A

true

11

What two things must you have for absorption of Vit A

zinc and protein

12

What form of vitamin A is part of rhodopsin

retinal

13

What is retinol's function in the body

reproduction

14

Does pre-formed vitamin A have antioxidant activity

no - only pro-formed carotenoids

15

True or false; carotenoids (sources of vitamin A) act as antioxidants

true

16

What is the primary cause of hypovitaminosis A

inadequate vitamin A intake

17

What is the clinical sign or symptom of hyperkeratosis

Xerophtalmia (dry eyes caused by cells becoming keratotic instead of normal glandular)

18

True or false; head aches and double vision are both symptoms of acute hypervitaminosis A while birth defects and joint pain are symptoms of chronic

true

19

What is the precursor for endogenous Vit D

Cholesterol

20

In what organ does Vit D3 become hydroxylated - becoming its active form Calcitriol

Kidney (Liver is the non-active home Calcidiol)

21

Dietary vitamin D is transported via ______; while endogenous is transported via_______

Chylomicrons

Vitamin D binding protein

22

How does vitamin D increase calcium absorption

induces synthesis of calcium binding protein

23

True or false; canned tuna is a very good source of Vit D

true - even better than tuna steaks because there are ground bones in the canned version

24

Do breastfed infants require vitamin D supplementation

yes

25

What is the typical does of Vit D utilized for pregnant women, obese individuals or patients with renal disease

1000-2000 IU

26

Who would be the only person to end up with Vitamin D toxicity

supplementation users

27

True or false; joint pain is a common symptom associated with vitamin E deficiency

false

28

What age population would you expect to experience hemolytic anemia from hypovitaminosis E

infants

29

True or false; fatigue is a symptom of hypervitaminosis E

true

30

Which fat-soluble vitamins require digestion prior to absorption

A and E