Abdomen: In humans, the abdomen is the part of the body that lies between the chest (or thorax) and the pelvis. It contains the liver, spleen, stomach, intestines, pancreas, gallbladder, and urinal bladder. It also contains the lower part of the esophagus. In colloquial terms, the abdomen is thought of as the "belly" or the area of the abdominal musculature. The abdomen is separated from the chest, internally, by the diaphragm. The abdominal cavity is lined by a serous membrane called the peritoneum, but not all the organs are covered by the membrane.
In insects, the abdomen is the last section of the body which has no legs attached to it. It is often called the "tail."
Abdomen of human and insect compared.
This page created 25 Oct 2013 14:19
Last updated 27 Feb 2016 22:58