Tubular Reabsorption and Secretion


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Tubular Reabsorption and Secretion
Tubular Reabsorption and SecretionIn a normal healthy human, around 180 L of filtrate are formed each day while only 1 to 2 liters of urine are formed. This is made possible by reabsorption of most of the filtrate in the renal tubule. Tubular reabsorption passes substances from the filtrate in the renal tubule into the blood of the peritubular capillary. Most tubular reabsorption occurs in the proximal convoluted tubule (see Fig. 11.4).Tubular reabsorption has both active and passive mechanisms. Normally 100% of glucose and amino acids are reabsorbed, and 99% of water is reabsorbed, while excess mineral ions and nitrogenous wastes remain in the filtrate. Carrier molecules are us…
Citation
Lee Waite, Ph.D., P.E.; Jerry Fine, Ph.D.: Applied Biofluid Mechanics, Second Edition. Tubular Reabsorption and Secretion, Chapter (McGraw-Hill Professional, 2017), AccessEngineering Export