physiologic role http://en.wikipedia.org/wiki/Renal_physiology English English English renal physiology tubular reabsorption filter blood and maintain fluid balance http://en.wikipedia.org/wiki/Renal_physiology#Mechanisms http://en.wikipedia.org/wiki/Renal_physiology Renal_physiology English http://en.wikipedia.org/wiki/Renal_physiology English http://en.wikipedia.org/wiki/Renal_physiology. English Wikipedia English English Wikipedia English Renal Physiology