Figure

Major determinants of extracellular fluid or serum inorganic phosphate (Pi) concentration include dietary Pi intake, intestinal Pi absorption, urinary Pi excretion and shift into the cells.

GI intake 1400 mg/d

Digestivejuice phosphorus

210 mg/d

Stool 490 mg/d

Total absorbed intestinal phosphorus 1120 mg/d

Stool 490 mg/d

Bone

Bone

Formation 210 mg/d

Resorption 210 mg/d

Formation 210 mg/d

Resorption 210 mg/d

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