The diagram shows the small bowel in relation to other organs in the abdomen. Leading into the stomach is the tube called the gullet, or oesophagus. Below the stomach is the small bowel which is a long tube that is concertinaed in the abdomen and leads to the large bowel. This a wider tube and starts on the left hand side as you look at it across the top of the abdomen and down the right hand side as you look at it. At this point it becomes the bigger pear shaped rectum and at the lower end of this is the anus where the bowel opens to the outside of the body.