Urinary%20SystemSp11

Urinary%20SystemSp11 - Urinary System Chapter 26 Pages...

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Urinary System Chapter 26 Pages 1019-1020; 1029-1046; 1056 1. Functions Fig. 26.1 2. Renal physiology Fig. 26.7 a. glomerular filtration 1
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b. tubular reabsorption c. tubular secretion Excretion rate of any substance = concentration in urine X urine flow rate = filtration rate – reabsorption rate + secretion rate Filtration rate = ([ ] plasma X GFR) x (free fraction) 3. Glomerular filtration a. The filtration membrane Fig. 26.8 2
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Volume of filtrate b. Net filtration pressure Fig. 26.9 glomerular blood hydrostatic pressure capsular hydrostatic pressure blood colloid osmotic pressure edema c. Glomerular filtration rate 7
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1. Renal autoregulation a. myogenic mechanism b. tubulo-glomerular feedback Fig 26.10 2. Neural regulation 8
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3. Hormonal regulation a. angiotensin II b. atrial natriuretic peptide (ANP) 4. Tubular reabsorption and secretion Table 26.3 a. Principles of tubular reabsorption & secretion 1. reabsorption routes: paracellular reabsorption 9
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transcellular reabsorption 2.
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