<prompt> What is the transpo maximum for glucose?175 mgmin275 mgmin375 mgmin475 mgmin  <response>: Glucose, amino acids, and bicarbonate are reabsorbed along with Na in the early poion of the proximal tubule. Faher along the tubule, Na is reabsorbed with Cl-. Glucose is typical of substances removed from the urine by secondary active transpo. It is filtered at a rate of approximately 100 mgmin 80 mgdL of plasma x 125 mLmin. Essentially all of the glucose is reabsorbed, and no more than a few milligrams appear in the urine per 24 h. The amount reabsorbed is propoional to the amount filtered and hence to the plasma glucose level PG times the GFR up to the transpo maximum TmG. When the TmG is exceeded, the amount of glucose in the urine rises. The TmG is about 375 mgmin in men and 300 mgmin in women. Ref: Ganongs Review of Medical Physiology 23rd edition, Chapter 38. 