NUTR 120 Lecture Notes - Lecture 21: Muscle Contraction, Teratology, Isotretinoin

31 views4 pages
5 Jan 2016
School
Department
Course

Document Summary

Retinoids- animal sources (retinol- least oxidized retinal retanoic acid- most. Rda: women- 700 mcg rae (retinol activity equivalents, men- 900 mcg rae (retinol activity equivalents) Beef liver (liver is a good source of everything) Vision- visual cycle (retinal: role of retinal in the visual cycle (figure 9. 4 in textbook): May cause difficulty adapting to dim light after exposure to bright light. Epithelial cell function- skin, respiratory tract, gi tract, corneal epithelia, etc: keratinization- drying of the epithelial cells (drying of the eye, xerophthalmia- deficiency of vitamin a. Scarring in deeper layers (loss of sight- can not be reversed at this point) Reproduction: women deficient in vitamin a can experience in fetal reabsorption, men deficient in vitamin a have decreased sperm formation. Must differentiate between: beta-carotene in foods vs supplements. In studies (1997) it was found that people who were taking beta- carotene had a 17% higher chance of developing cancer: retinoids (food or supplements)

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents