Unformatted text preview: a hormone involved with salt and water balance. h When fluid flow increases in the distal tubule as a result of an increase in GFR the macula densa cells send a signal to the afferent arteriole to contract thereby reducing GFR. (Signal may involve NaCl) B. Filtration, Reabsorption, Secretion, Excretion...
View Full Document
- Fall '09
- Kidney anatomy, Nephron, macula densa, distal tubule, Juxtaglomerular apparatus