Digestive system

The table shows the main structures and associated organs of the human alimentary canal (or gut), and their functions.

StructureFunction
MouthWhere food enters the alimentary canal and digestion begins
Salivary glandsProduce saliva containing amylase
OesophagusMuscular tube which moves ingested food to the stomach
StomachMuscular organ where digestion continues
PancreasProduces digestive enzymes
LiverProduces bile
Gall bladderStores bile before releasing it into the duodenum
Small intestine - duodenumWhere food is mixed with digestive enzymes and bile
Small intestine - ileumWhere digested food is absorbed into the blood and lymph
Large intestine - colonWhere water is reabsorbed
Large intestine - rectumWhere faeces are stored
Large intestine - anusWhere faeces leave the alimentary canal
The human digestive system, from the salivary glands at the back of the throat, through the stomach, liver, gall bladder, pancreas, small intestine large intestine, appendix, rectum and anus.