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5 Cards in this Set
- Front
- Back
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What is the major mech for changing blood flow?
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Change arteriolar resistance
(afferent or efferent arteriolar resistance) |
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What does sym nerve activity cause?
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Decrease in RBF and GFR
--> more alpha1 R's on afferent arterioles; causes vasoconstriction |
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Effect of angiotension II on GFR?
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vasoconstricts both afferent and efferent; but efferent is more sensitive
Low levels: Increases GFR (only constricts efferent) High levels: low GFR (constricts both) |
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Effect of prostaglandins?
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Protective - vasodilates to increase RBF to prevent renal failure from sym NS or angiontension II
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Dopamine?
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Protects cerbral, cardiac, splanchnic and renal arterioles by vasodilation.
(Used in hemorrhages) |
