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My question regards the effects of constricting the efferent arteriole (in the region of the glomerulus). TBR (page 180 book I #41) claims that constricting the efferent arteriole will first INCREASE and later DECREASE* the glomerular filtration rate.
A textbook I am looking at (Silverthorn physio 6th ed) says that constricting the efferent arteriole will INCREASE the glomerular filtration rate.
So for MCAT purposes, if asked what will happen by constricting the efferent arteriole, what should the answer be if it is unclear whether the question is referencing short-term but long-term effects?
*TBR says this decrease will occur because more plasma will eventually accumulate in Bowman’s capsule. This plasma will increase the solute concentration in the glomerulus and inhibit fluid trying to flow out of the glomerulus.
A textbook I am looking at (Silverthorn physio 6th ed) says that constricting the efferent arteriole will INCREASE the glomerular filtration rate.
So for MCAT purposes, if asked what will happen by constricting the efferent arteriole, what should the answer be if it is unclear whether the question is referencing short-term but long-term effects?
*TBR says this decrease will occur because more plasma will eventually accumulate in Bowman’s capsule. This plasma will increase the solute concentration in the glomerulus and inhibit fluid trying to flow out of the glomerulus.