A tiny tube which is part of a nephron.
The fine tubular part of a nephron, through which water and certain dissolved substances are reabsorbed back into the blood.
The part of a nephron through which renal filtrate from the renal corpuscle flows and is changed to urine by reabsorption and secretion. The parts, in order, are the proximal convoluted tubule, the loop of Henle, the distal convoluted tubule, and collecting tubule.