<prompt> The main site of bicarbonate reabsorption isProximal convoluted tubuleDistal convoluted tubuleCortical collecting ductMedullary collecting duct  <response>: Ans. a Proximal convoluted tubuleRef: Ganong, 25th edp.679Proximal convoluted tubule PCT reabsorbs,23rd 67 of filtered sodium chloride NaCl23rd 67 of filtered water23rd 67 of filtered potassium K23rd 67 of filtered urea70 of filtered calcium80 of Filtered phosphate and bicarbonate100 of filtered glucose and amino acids 