上浒充通大学 SHANGHAI JIAO TONG UNIVERSITY 1896 1920 1987 2006 Electrolyte Transport Mechanisms Tubular fluid Nat/spump caillary Channel 6 A Na+ Cotransport ⑧ Na ② 3 Na [Na'] Countertrapsport Na+ © Na Lateral intercellular space H2O Tight junction X=glucose,amino acids,phosphate, etc. Net Na +H2O Transport Apical cell Basolateral membrane cell membrane Elsevier 2005.Minneman Wecker:Brody's Human Pharmacology 4e www.studentconsult.comElectrolyte Transport Mechanisms Channel Cotransport Countertransport Na+/K+ pump X = glucose, amino acids, phosphate, etc