<prompt> The transpo maximum of glucose in renal tubules during reabsorption?375150180120  <response>: 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. Also know: Glucose, amino acids, and bicarbonate are reabsorbed along with Na in the early poion of the proximal tubule. 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. Ref: Barrett K.E., Barman S.M., Boitano S., Brooks H.L. 2012. Chapter 37. Renal Function Micturition. In K.E. Barrett, S.M. Barman, S. Boitano, H.L. Brooks Eds, Ganongs Review of Medical Physiology, 24e. 