Vasoconstriction of the efferent arteriole (labeled on the left side of the diagram)would result in all of the following EXCEPT
A)increased glomerular filtration rate.
B)increased net filtration pressure.
C)increased urine production.
D)increased tubular secretion of wastes.
E)less efficient tubular reabsorption of ions.

Question

Vasoconstriction of the efferent arteriole (labeled on the left side of the diagram)would result in all of the following EXCEPT 
A)increased glomerular filtration rate. 
B)increased net filtration pressure. 
C)increased urine production. 
D)increased tubular secretion of wastes. 
E)less efficient tubular reabsorption of ions.

Quizplus · Accepted Answer

Vasoconstriction of the efferent arteriole would result in increased glomerular filtration rate, increased net filtration pressure, and increased urine production, as it would lead to an increase in blood pressure within the glomerulus. However, it would also result in decreased tubular secretion of wastes, as less blood flow to the peritubular capillaries would decrease the availability of waste products for secretion. It would also result in more efficient tubular reabsorption of ions, as the increased pressure within the glomerulus would lead to more filtration of ions into the tubules, and the decreased blood flow to the peritubular capillaries would decrease the availability of ions for reabsorption.

Vasoconstriction of the Efferent Arteriole (Labeled on the Left Side