Q:

When systemic blood pressure increases, how does the kidney respond to maintain glomerular fi ltration rate

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When systemic blood pressure increases, how does the kidney respond to maintain glomerular fi ltration rate?


  1. The afferent arteriole dilates
  2. The efferent arteriole constricts
  3. The efferent arteriole dilates
  4. The afferent arteriole constricts

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D: An increase in BP stretches the walls of the efferent arteriole which respond by constricting. The resulting decrease in diameter decreases glomerular blood fl ow which keeps GFR within normal limits. 

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