Vitamin A

Question 1

Absorption

Answer 1

Mixed micelles
Esterfied with fatty acids and incorporated into chylomicra
Enters lymphatic system
Most in blood is bound to Retinol Binding Protein

Question 2

Storage

Answer 2

Liver
Released when needed
Liver can tell when there is a deficiency

Question 3

Functions

Answer 3

Vision(nervous system)
Epithelial cells integrity(immune function)
Good bone development
Bye bye cancer (antioxidant)

Question 4

Deficiency

Answer 4

Lack of repro
Lack of vision
Lack of bone formation
Lack of embryo development
Respiratory infections 
Abnormalities

Question 5

Toxicity

Answer 5

10x excess
Weight loss
Anorexia
Skin thickening

Question 6

Vitamin A units

Answer 6

Standardize the varying efficiencies into a common unit by….
Referenced to retinal and ruminants….

Conversion unit: .3 mcg retinal equivalent