Total annual layer (summer + winter) thickness for 36 varves is plotted on the graph to the right. A data file and the lines posted on the image were all created by a computer program designed to sequentially measure varve sequences.
Blockage of the bile ducts may cause symptoms such as abdominal pain, nausea and vomiting. If the bile duct remains blocked bile is unable to drain properly, jaundice (yellow discoloration of the eyes and skin) can develop and an infection known as cholangitis may also occur.ccasionally the gallstones can also block the flow of digestive enzymes from the pancreas because both the bile ducts and pancreas ducts drain through the same small opening (called the Ampulla of Vater) which is held tight by a small circular muscle (called the Sphincter of Oddi).
Percutaneous Biliary Drainage. Biliary duct obstruction is a serious problem, which may be related to benign or malignant causes. The mechanical obstruction of the biliary duct interrupts the flow of bile produced by the liver into the gut. Serious complications related to the obstruction may ensue, with changes in the liver function, development of infection, and other general symptoms.