Reviewing the renal functioning,this video presents an animation on Renal tubular acidosis, the causes and its types. Timeline: 00:05 introduction 00:45 review of proximal convoluted tubule or PCT 03:18 review of collecting duct 05:55 renal tubular acidosis type 1 07:22 renal tubular acidosis type 4 08:03 renal tubular acidosis type 2