work of the kidneys - part 8 of 19. describes structure and function of the renal system, and explains how the kidneys maintain uniformity in blood and tissues. demonstrates, with animated drawings and laboratory experiments, the formation of urine, regul - 8 segment diagram stock videos & royalty-free footage00:32Work of the Kidneys - part 8 of 19. Describes structure and function of the renal system, and explains how the kidneys maintain uniformity in blood and tissues. Demonstrates, with animated drawings and laboratory experiments, the formation of urine, regulOld-fashioned, Archival, Scale