(June 2011). The nephron (from Greek Î½ÎµÏÏÏÏ - nephros, meaning kidney) is the basic structural and functional unit of the kidney. Its chief function is to regulate the concentration of water and soluble substances like sodium salts by filtering the blood, reabsorbing what is needed and excreting the rest as urine. nephron eliminates wastes from the body, regulates blood volume and blood pressure, controls levels of electrolytes and metabolites, and regulates blood pH.
Making the world better, one answer at a time. The country where the last name Burton originated is England. This name is used as a last name as well as a first name and means from the fortified town.
The surname from this source may be either locational or topographical in origin; if the former, it derives from any one of the places named with this term, in, for example, Devonshire, Gloucestershire, Hampshire, Lancashire and Sussex. Most of these places are recorded in the Domesday Book of 1086 as Dene. As a topographical surname, Dean(e) was used to denote esidence in or near a valley, as in the following early examples of the name: William de la Dena (1193, Surrey); Simon in la Dene (1271, Somerset); and William atte Dene (1296, Sussex).