Question

Hepato-pancreatic duct opens into duodenum and carries
A) Bile
B) Pancreatic juice
C) Both bile and pancreatic juice
D) Saliva

Answer 1

Hint:The hepato-pancreatic duct has a junction called, ampulla of Vater where both the cystic and the pancreatic duct join together.

Complete Answer:
Small intestine is the site where most of the digestion and absorption take place.It has three regions namely duodenum, jejunum and ileum.Duodenum is the first part of the small intestine located between the stomach and middle part of the small intestine, or jejunum. It receives partially digested food from the stomach and absorbs nutrients from it. It is the main site for iron absorption. Duodenum is the shortest segment of the small intestine and is about 9 to 11 inches long. Duodenum has Brunner’s gland, which is a tubular submucosal gland. Its function is to produce mucus rich alkaline secretion, containing bicarbonate, to protect duodenum from the acidic content of the chyme.The hepato-pancreatic duct, also known as the ampulla of water, is formed by the fusion of pancreatic duct and bile duct. The pancreatic duct transfers bicarbonates and digestive enzymes such as trypsin, lipase and amylase to the duodenum and bile, from the gallbladder has salts which emulsify the fat droplets into small units. Most of the emulsification occurs in duodenum.

The duct system of liver, gallbladder, and pancreas: The bile secreted by the hepatic cells passes through the hepatic ducts and is stored in the gallbladder. The cystic duct (duct of gallbladder) along with the hepatic duct from the liver forms the common bile duct. The bile duct and the pancreatic duct open together into the duodenum as hepato- pancreatic duct. The sphincter of Oddi regulates the flow of bile and pancreatic juices into the duodenum and prevents the entry of duodenal contents into the hepato-pancreatic duct.

Hence the correct option is option C, ‘both bile and pancreatic juice’.

Note: In adult unio, the shell is made up of two halves called valves and it covers the soft body. The two valves are symmetrical and are also equal.