Translations:Rückresorption/2/en

Recirculation: Chloride, bicarbonate, sodium, potassium and calcium ions (electrolytes) are reabsorbed into the blood or pumped back into the blood through active reabsorption - under ATP consumption. These electrolytes are passively followed by an inflow of water, so that already 2/3 of the primary urine is reabsorbed in the main part of the tubular system. Important: The reabsorption mechanism can only cope with a certain concentration, e.g. of glucose. If a threshold value is exceeded, the kidneys excrete the "excess" with the urine (diabetes).