Phosphorous Flashcards
In what form is Phosphorous usually absorbed
Phosphate - PO2/4
How is Phosphate absorbed
Carrier-mediated active transport OR diffusion
What substances Enhance absorption of Phosphate
Vitamin D
What is Organic Phosphate
Phosphate bound to Carbon compound
What is the bioavailability of Organic Phosphate
60%
What is the bioavailability of Non-organic Phosphate
90%; can interfere with Calcium absorption during bone mineralization
What substances Inhibit absorption of Phosphate
Phytic Acid, Magnesium, Aluminum, Calcium
How is Phosphate proportioned in body
Most absorbed (not all), small amount deposited in bones, rest excreted
How much Phosphate is secreted in the urine
67-90%
How much Phosphate is secreted in the feces
10-33%
What is the RDA for Phosphate
700mg
What are food sources of Phosphorous
Wheat, oats, brown rice, meats, milk
