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    kidney function tests

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    1 : KIDNEY FUNCTION TESTS Dr.Hariharan
    2 : KIDNEY Central role in homeostatic mechanism Paired organ located in lumbar region Adult – 12cm long and weighs about 150gm in men, 135gm in women Serves as vehicle excreting metabolic waste and maintain osmolarity of body fluids
    3 : Functions of kidney Excretes metabolic waste products such as urea, creatinine, uric acid Maintains water and electrolyte balance Maintain acid base balance Hormonal – erythropoietin, renin, vit.D Plays a role in calcium metabolism
    4 : NEPHRON Functional unit of the kidney Each kidney contains up to 1 million nephrons It has 2 components 1. glomerular apparatus- filtration unit 2. tubular system for selective reabsorption
    5 : PROPERTIES OF URINE : Volume – 1000 to 1500ml /day Reaction – slightly acidic with pH 4.5 -6 Specific gravity – 1.010 – 1.025 Colour – straw coloured Odor – fresh urine has slight aromatic odor
    6 : Composition of urine Urine Water Solids Organic inorganic Urea, uric acid, creatinine, Ammonia Na. K, Ca Cl, Phosphate sulfate
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