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Urinary System I - Kidney Day Introduction The Kidneys...

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Kidney Day : Introduction Kidney Day : Introduction The Kidney’s Functions
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Functions of Kidneys: 1. Produce Urine (as a function of ridding body of  Nitrogenous waste and other wastes.  2. Regulate water balance 3. Regulate acid-base of body fluids 4. Calcium Homeostatis ( Calcitriol) 5.  In times of starvation ( Gluconeogenesis) 6. Secretes Erythropoieten  7. Secretes Renin ( Controls Blood pressure) 8. Detoxify free radicals with use of peroxisomes. 
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Formation of Urine Formation of Urine Figure 15.5
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Function of Nephron Parts Glomerulus Filtration of H 2 O and dissolved substances from plasma Bowman's Capsule Receives glomerular filtrate Proximal Tubule Reabsorbs glucose, amino acids, ions, organic acids, etc. Reabsorbs H 2 O Reabsorbs Cl- ions and other ions by electrochemical attraction Descending Limb Reabsorbs H2O by osmosis of Loop Ascending Limb Reabsorbs Cl- by active transport and of Loop passive reabsorption of Na+ Distal Tubule Reabsorbs Na+ by active transport Reabsorbs H2O by osmosis Active secretion of H+ ions Passive secretion of K+ ions by electrochemical attraction
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Summary of Tubular Summary of Tubular Reabsorption and Secretion Reabsorption and Secretion
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Kidney Function: Regulation of Body  Kidney Function: Regulation of Body  Fluids, their volume and osmolarity;  Fluids, their volume and osmolarity;  How is this accomplished?  How is this accomplished?  THE COUNTERCURRENT MECHANISM THE COUNTERCURRENT MECHANISM
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The Countercurrent Mechanism The Countercurrent Mechanism Unit 1 - Objective 7 ?
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