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 major endocrine glands include the two adrenal glands, the pituitary gland, the four parathyroid glands, the sex glands and the thyroid glands. A few hormones are produced by endocrine tissue present in organs that are not primarily endocrine glands. Such organs include the brain, the stomach and the pancreas.