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If the afferent arteriole of the nephron...

If the afferent arteriole of the nephron constricts, what happens to the GFR in that nephron? If the efferent arteriole constricts what happens to the GFR in that nephron? Assume that no auto regulation takes place.

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Constriction of the afferent arteriole of the nephron causes decrease in Glomerular filtration rate (GFR). since the quantity of blood flow through the arteriole decreases. 11 : Constriction of the efferent arteriole of the nephron causes increase in Glomerular Filtration rate.
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