Chapter 26 Urinary System. Functions of the Kidneys Regulating blood ionic composition Regulating blood pH Regulating blood volume Regulating blood.

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Presentation transcript:

Chapter 26 Urinary System

Functions of the Kidneys Regulating blood ionic composition Regulating blood pH Regulating blood volume Regulating blood pressure Produce calcitrol and erythropoietin Regulating blood glucose Excreting wastes

Functions Regulating blood ionic composition Regulating blood pH Regulating blood volume Regulating blood pressure Produce calcitrol and erythropoietin Regulating blood glucose Excreting wastes

Characteristics of Urine Volume = 1 to 2 liters / day Color = yellow or amber (red from beets) Turbidity = Transparent Odor = aromatic (asparagus gives another distinct odor) pH = 4.6 to 8.0 Specific gravity (density) – more dense with solutes.

Filtered or Reabsorbed SubstancePlasmaUrine Proteins200 g0.1 g Bicarbonate 4.6 g0 Glucose3 g0 Urea4.8 g25 g Uric acid0.15 g0.8 g Creatinine0.03 g1.6 g

Normal Constituents of Urine Urea – from metabolism of amino acids Creatinine – from creatine metabolism Uric acid – from catabolism of nucleic acids Urobilinogen – breakdown of hemoglobin Hippuric acid, indican, and ketone bodies Other substances and inorganic molecules

Abnormal Constituents of Urine Albuminuria Glucosuria Hematuria Pyuria Ketonuria (Ketosis) Bilirubinuria Casts Renal calculi Microbes

Words Glomerulonephritis (Steptococcus) Pyelonephritis Cystitis Polycystic disease Renal failure UTI’s Azotemia

More Words Intravenous Pyelogram (IVP) Uremia Urethritis Enuresis Nocturnal enuresis Micturition Incontinence

More Words Lithotripsy Dysuria Polyuria Nocturia Anuria Oliguria

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