The return всасывание various substances in канальцах can occur passively and actively. Passive transport occurs without an energy expense on electrochemical, concentration or osmotic gradients. By means of passive transport it is carried out реабсорбция waters, chlorine, urea. cefixime It is carried out throughout all digestive path, but in each department there are features. In the central pole everyone колбочка is connected with one bipolar cage, which, in turn - with one ганглиозной.