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1. What is reabsorption, when referring to the kidneys?
In renal physiology, reabsorption or tubular reabsorption is the process by which the nephron removes water and solutes from the tubular fluid (pre-urine) and returns them to the circulating blood. Substances are reabsorbed from the tubule into the peritubular capillaries.
2. What substances are reabsorbed in the kidney?
Sodium/proton exchanger, which enables reabsorption of bicarbonate. Glucose, amino acids and other substances diffuse out of the epithelial cell down their concentration gradients on passive transporters and are then reabsorbed by the blood capillaries.
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