Electrical Enclosure Comparisons of NEMA and UL Type Rating Standards. When it comes to electrical safety in the USA there are two main organizations who set safety standards: NEMA (the National Electrical Manufacturers Association) and UL (Underwriters Laboratories). NEMA is the association of electrical equipment and medical imaging manufacturers in the United States.
View of the Liver and Gallbladder. Bile empties from the gallbladder into the common bile duct. The common bile duct joins with the pancreatic duct to form the ampulla of Vater, which empties into the duodenum. Before joining the pancreatic duct, the common bile duct tapers to a diameter of â¤ 0.6 cm. The sphincter of Oddi, which surrounds both the pancreatic duct and the common bile duct, includes a sphincter for each duct. Bile does not normally flow retrograde into the pancreatic duct.
Common hepatic duct. The connection between the left and right hepatic ducts forms the common hepatic duct, whose function is to drain bile from the liver. This duct is an important part of the biliary duct system, which transports waste from the liver and aids in digestion by releasing bile. Bile is a greenish-brown fluid that helps digest fats. When measured in adults, the common hepatic duct is approximately six to eight centimeters in length.