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14 Cards in this Set
- Front
- Back
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gloremular filtration
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Blood pressure from the afferent renal arteriole drives water and small solutes through podocytes, and fenestrations into Bowmen's capsule and the proximal convoluted tubule, all of which is located in the renal granular cortex.
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Proximal convoluted tubule
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Where a lot of water, and solute reabsorption (glucose and amino acids) occurs. Associated with peritubular capilllaries.
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Descending limb of the loop of henle
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thin walled, therefore, permeable to water (which flows out) but doesn't pump solutes.
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Ascending limp of the loop of henle
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Not permeable to water. But pumps out NaCl which decreases its osmolarity but creates a concentration gradient in the interstitial fluid. .
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Distal convoluted tubule
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in the first part, sodium and chloride are pumped out. In the second part, mostly water just diffuses out.
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Collecting duct
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Collects the waste from many distal convoluted tubules. Leads to the ureter. Mostly, water diffuses out. Also, urea does sometimes, which helps maintain the concentration gradient.
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Concentrating Power
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The concentration in the urine/the concentration in the blood
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Renal clearance factor
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Is the concentrating power x the volume per unit time (that is excreted)
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Gloremular filtration rate
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For things that are neither secreted nor reabsorbed, it is basically the RCF
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Water reabsorption
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GFR-V
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Rate of absorption or secretion
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is GRF * [P] -[U]V
If it is positive, rate of absorption, if negative, rate of seretion |
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Macula densa
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Signals the afferent arteriole to dilate
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Justagloremular cells
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Stimulate the release of renin in response to low GFR
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ADH
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released by posterior pituitary in response to decreased blood pressure.
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