Describe in short about the digestive glands associated with alimentary canal and their main functions.
An alimentary canal and digestive glands are parts of human digestive system. The various parts of the alimentary canal includes mouth, teeth, esophagus, pharynx, stomach, small intestine (duodenum, jejunum and ileum), large intestine, anus. Digestive glands includes salivary glands, pancreas, liver, gastric glands and intestinal glands. Out of these, salivary glands, pancreas and liver are major glands. The main function of salivary gland is to produce saliva which aids in digestion. Hepatic cells of liver secrete bile that pass into the gallbladder through the hepatic ducts. The hepatic duct from the liver and cystic duct from the gallbladder forms the common bile duct. Pancreas secretes the digestive enzymes into the small intestine in the form of pancreatic juice.