Path 1 Quiz 5 Fat-soluble Vitamins

Question 1

Where in the body is Vitamin A found?

Answer 1

Liver

Question 2

What are the 3 forms of Vitamin A

Answer 2

Retinol
Retinal
Retinoid Acid

Question 3

Function of Retinol

Answer 3

Storage and transport form
90% is stored in the liver
Stored for 6 months

Question 4

Function of Retinal

Answer 4

Maintains normal vision in dim light

- important in the production of visual pigments in photoreceptors

Question 5

Retinonic Acid

Answer 5

Important in determining lifespan of epithelial cells

potentiation and differentiation of specialized epithelial cells, mainly mucous secreting cells

Question 6

Where is retinol found?

Answer 6

Orange and red plants such as carrots

Question 7

What does retinol in food must be eaten with to be absorbed?

Answer 7

It must be eaten with Fat for absorption

Question 8

Carotinoids

Answer 8

Natural precursor for retinal - example betacarotene = Provitamin A

Question 9

Retinoids

Answer 9

form of Provitamin A

Syntehtic/artificial, avoid these - can lead to teratogenic affects

Question 10

Rhodopsin

Answer 10

Rods

Question 11

Iodopsin

Answer 11

Cones

Question 12

Deficiency in retinal leads to

Answer 12

Night Blindness

Question 13

Deficiency in Retinoid acid leads to

Answer 13

Xerophthalmia 
Xeroxes 
Squamous Metaplasia 
- Follicular and popular dermatosis
- Pulmonary Infection 
- Nidus formation

Question 14

Xerophthalmia

Answer 14

Dry eye - obstruction of lacrimal gland

Question 15

Xeroxes

Answer 15

Dryness pathology
Sloughed epithelial cells of conjunctiva form plaques close to cornea leading to BITOT’S SPOTS ===> KERATOMALACIA —-> ulceration of cornea —-> blindness via CT

Question 16

Define Keratomalacia

Answer 16

Softening damage to the cornea

Question 17

Bitot’s spots is closely related to

Answer 17

Vitamin A deficiency of retinoid acid and is apart of xeroxes - located in the eyeball

Question 18

AKA for nightblindness

Answer 18

Chicken blindness

Question 19

Vitamin A helps with the normal life span of epithelial cells T/F

Answer 19

True

Question 20

The most common development of retinoic acid deficiency is

Answer 20

Xerophthalmia

Question 21

Enhancement of immunity to infections, particularly in children are reduced by Vitamin A by _____ % It fights the morality of 3 diseases they are

Answer 21

Measles
Pneumonia
Infectious diarrhea

Question 22

What are the two types of Hypervitaminosis A

Answer 22

Acute

Chronic

Question 23

Characteristics of acute hypervitaminosis

Answer 23

Characterized by increased intracranial pressure/triad

Headache associated with nausea and vomiting and papilledema

Question 24

Characteristics of chronic hypervitaminosis

Answer 24

weight loss 
Nausea, vomiting
Dryness of mucosa of lips 
bone and joint pain
Hepatomegaly
Liver Fibrosis
Hyperostosis aka dish aka forester's disease