Renal blood flow and GFR- Hamra- 1/30-31/2013
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| Normal GFR | 180 L/day
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| Oncotic pressure in the glomerulus rises faster in high or low flow? | Low
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| As RBF increases, GFR | Increases
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| Filtration fraction is higher at high or low flows? | Low flows
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| Which factor dominates GFR changes in slight vasoconstriction? | Pgc
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| Which factor dominates GFR changes in severe vasoconstriction? | Renal plasma flow
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| Explain why the PTC's have a relatively high oncotic pressure | The fluid filtration out of the glomeruli leaves the proteins behind which increases the PCT oncotic pressure
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| Explain why the PTCs have a relatively low hydrostatic pressure | The high resistance in the efferent arteriole means that the hydrostatic pressure downstream is lower than normal
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| Autoregulation includes which two processes? | Myogenic response and Tubuloglomerular feeback
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| The myogenic response responds to a stretch of smooth muscle with | An increase in constriction of the arteriolar smooth muscle
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| Renal blood flow and GFR are help constant in which BP range | 80-180 mmHg
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| If the macula densa senses too much NaCl in the distal tubule, a signal is sent to | the afferent arteriole to constrict (via adenisine)
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| As blood pressure increases, afferent arteriolar resistance | Increases
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| A low dose of Dopamine causes | Vasodilation
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