(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.
According to other sources, it comes from the surname Graham, which in turn is an Anglo-French form of the name of the town of Grantham, in Lincolnshire, England. The settlement is recorded in the 11th century Domesday Book variously as Grantham, Grandham, Granham and Graham.This place name is thought to be derived from the Old English elements grand, possibly meaning  gravel , and ham, meaning homestead.In the 12th century the surname was taken from England to Scotland by Sir William de Graham, who founded Clan Graham.Variant spellings of the forename are Grahame and Graeme.he settlement is recorded in the 11th century Domesday Book variously as Grantham, Grandham, Granham and Graham. This place name is thought to be derived from the Old English elements grand, possibly meaning  gravel , and ham, meaning homestead.