Effective in 2003, the Bureaus of Alcohol, Tobacco and Firearms (ATF), Federal Law Enforcement Training Center (FLETC), U.S. Customs, and the United States Secret Service (USSS) are no longer Bureaus of the Department of the Treasury.
The endocrine system is made up of a network of glands. These glands secrete hormones to regulate many bodily functions, including growth and metabolism. Endocrine diseases are common and usually occur when glands produce an incorrect amount of hormones.
The endocrine pancreas is composed of small islands of cells, called the islets of Langerhans. These endocrine cells donât release their secretions into the pancreatic ducts, instead they release hormones, such as insulin and glucagon, into the blood stream, and these hormones in turn help control blood sugar (glucose) levels.