<P> There are three parts to the eccrine sweat gland and these are the pore, the duct, and the gland . The pore is the portion that goes through the outermost layer of the skin and is typically 5 - 10 microns in diameter . The duct is the part of the sweat gland that connects dermis cells to the epidermis . It is composed by two layers of cells and is between 10 and 20 microns in diameter . The gland does the actual secretion and it lies deep within the dermis . The cells that make up the gland are larger in size than the duct cells and its lumen is around 20 microns in diameter . </P> <P> After bile is produced in the liver, it is stored in the gall bladder . It is then secreted within the small intestine where it helps to emulsify fats in the same manner as a soap . Bile also contains bilirubin, which is a waste product . </P> <P> Bile salts can be considered waste that is useful for the body given that they have a role in fat absorption from the stomach . They are excreted from the liver and along with blood flow they help to form the shape of the liver where they are excreted . For instance, if biliary drainage is impaired than that part of the liver will end up wasting away . </P> <P> Biliary obstruction is typically due to masses blocking the ducts of the system such as tumors . The consequences of this depend on the site of blockage and how long it goes on for . There is inflammation of the ducts due to the irritation from the bile acids and this can cause infections . If rupture of the duct takes place it is very traumatic and even fatal . </P>

List the excretory organs in humans and name one waste product excreted by each organ