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1Ch. 26 – The Urinary System•Thegeneralfunctions of the major organs of the urinary system are indicated at rightFig. 26-1, p. 966Specific functions of the urinary system• 1. Excretion= the removal of organic wastes from body fluids• 2. Elimination= the discharge of wastes to the external environment• 3. Regulation of plasma volume and solute concentration, by…–Regulating blood volume and pressure, by…•Adjusting the volume of water in the urine•Secreting erythropoietin (EPO)•Secreting renin–Regulating plasma concentrations of Na+, K+, Cl-, Ca2+, etc.–Helping to regulate blood pH, by…•Excreting or conserving H+and HCO3-–Conserving valuable nutrients–Assisting the liver in detoxifying poisons and deaminatingamino acids