Renal2 - 3 Steps of Urine Formation Afferent arteriole...

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Cortical radiate artery Afferent arteriole Glomerular capillaries Efferent arteriole Glomerular capsule Rest of renal tubule containing filtrate Peritubular capillary To cortical radiate vein Urine Glomerular filtration Tubular reabsorption Tubular secretion Three major renal processes: 3 Steps of Urine Formation
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Filtration Membrane Plasma Filtrate in capsular space
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Glomerular capsule Afferent arteriole 10 mm Hg Net filtration pressure Glomerular (blood) hydrostatic pressure (HP g = 55 mm Hg) Blood osmotic pressure (Op g = 30 mm Hg) Capsular hydrostatic pressure (HP c = 15 mm Hg) Filtration Pressure
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Glomerular Filtration Rate (ml/min) • Depends on. ..
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Maintaining Glomerular Filtration Rate
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GFR AA G EA Myogenic Mechanism of Maintaining GFR Normal Situation
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GFR AA G EA Response to a rise in systemic BP Myogenic Mechanism of Maintaining GFR
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GFR AA G EA Response to a fall in systemic BP Myogenic Mechanism of Maintaining GFR
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Decreased GFR Filtrate flows ____________ ________NaCl in the filtrate reaching the DCT Tubuloglomerular Mechanism Macula densa cells recognize NaCl and decrease vasoconstrictor release Afferent arteriole ___________ GBP and GFR ____________
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Effect of the Sympathetic Nervous System Increased sympathetic activity NE and E cause afferent arteriole to constrict GBP and thus GFR fall What is an advantage of this process?
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• Protects against. .. • Initiated by the release…
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Renal2 - 3 Steps of Urine Formation Afferent arteriole...

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