Figure

Renal tubular reabsorption of phosphorus. Most of the inorganic phosphorus in serum is ultrafilterable at the level of the glomerulus. At physiologic levels of serum phosphorus and during a normal dietary phosphorus intake, most of the filtered phosphorous is reabsorbed in the proximal convoluted tubule (PCT) and proximal straight tubule (PST). A significant amount of filtered phosphorus is also reabsorbed in distal segments of the nephron [7,9,10]. CCT—cortical collecting tubule; IMCD—inner medullary collecting duct or tubule; PST—proximal straight tubule.

Lumen

Gluconeogenesis Glycolysis

Blood Pi

Blood Pi

Gluconeogenesis Glycolysis

Oxidative phosphorylation

-65mV -65mV

Oxidative phosphorylation

-65mV -65mV

0 0

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