According to the tubuloglomerular feedback theory,an increase in tubular fluid NaCl delivery to the macula densa results in which of the following?
A)A decrease in the glomerular filtration rate of the same nephron
B)An increase in renal blood flow to the glomerulus of the same nephron
C)Activation of the renal sympathetic nerves
D)An increase in proximal tubule solute and water reabsorption
E)An increase in renin secretion

Question

Quizplus · Accepted Answer

According to the tubuloglomerular feedback theory, an increase in tubular fluid NaCl delivery to the macula densa signals the afferent arteriole to constrict, resulting in a decrease in the glomerular filtration rate of the same nephron. This helps to maintain a constant glomerular filtration rate and prevent excessive fluid and electrolyte loss.

According to the Tubuloglomerular Feedback Theory,an Increase in Tubular Fluid