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.
It consists of bile salts, electrolytes, bile pigments, cholesterol, and other fats. The gallbladder is the storage sac that holds bile. Bile flows out of the liver through the right and left hepatic ducts (see Liver: Blood Supply of the Liver), which come together to form the common hepatic duct.This duct then joins with a duct coming from the gallbladder (see Gallbladder and Biliary Tract), called the cystic duct, to form the common bile duct.The pancreatic duct joins the common bile duct just where it empties into the duodenum through the sphincter of Oddi (see Figure: Digestive System).Between meals, bile salts are stored in the gallbladder, and only a small amount of bile flows into the intestine.he pancreatic duct joins the common bile duct just where it empties into the duodenum through the sphincter of Oddi (see Figure: Digestive System). Between meals, bile salts are stored in the gallbladder, and only a small amount of bile flows into the intestine.