PHYSIOLOGY
RENAL AND ACID BASE PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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each control mechanism of GFR works by ____
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regulating radius of afferent arteriole
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regulating radius of efferent arteriole
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increasing blood flow
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regulating radius of all arteries
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Explanation:
Detailed explanation-1: -Afferent arteriole constriction leads to decreased GFR and decreased RPF, resulting in no change in FF. One important function of prostaglandins is to dilate the afferent arteriole.
Detailed explanation-2: -Autoregulation of Glomerular Filtration Rate and Renal Blood Flow. Autoregulation is necessary to prevent changes in GFR and RBF when blood pressure varies abruptly. Two systems are responsible for renal autoregulation: (1) a myogenic mechanism and (2) a tubuloglomerular feedback mechanism.
Detailed explanation-3: -What happens to the glomerular filtration rate as the afferent radius is increased? The glomerular filtration rate decreases, due to the decreased blood flow into the glomerulus.
There is 1 question to complete.