The portion of the body that lies between the thorax and the pelvis.
1: The part of the body between the thorax and the pelvis; also: the cavity of this part of the trunk containing the chief viscera.n2: The posterior section of the body behind the thorax in an arthropod.
Subdivision of trunk proper, which is demarcated from the thorax internally by the inferior surface of the sternocostal part of the diaphragm and externally by the costal margin, from the back of abdomen by the external surface of the posterior abdominal wall, from the perineum by the superior surface of the urogenital diaphragm and from the lower limbs by the inguinal folds; together with the thorax, and perineum, it constitutes the trunk proper. Examples: There is only one abdomen.
The most posterior of the three tagma (FBbt:00000002).
The third large region of the insect body, which originally comprised twelve segments, each segment is usually formed by a dorsal tergite and a ventral sternite and carries on both sides a spiracle, sometimes, both the dorsal and the ventral plates are further subdivided to give rise to latero-tergites and latero-sternites. In the context of Drosophila refers to the most posterior of the three main tagmata or divisions of the body plan, after the head and the thorax.
The third, posterior division (tagma) of the insect body. In adult mosquitoes, consisting of ten apparent segments.
In vertebrates such as mammals the abdomen (belly) constitutes the part of the body between the thorax (chest) and pelvis. The region enclosed by the abdomen is termed the abdominal cavity.
body cavity of the human body (and animal bodies) that holds the bulk of the viscera. It is located below (or inferior to) the thoracic cavity, and above the pelvic cavity. It is a part of the abdominopelvic cavity. Organs of the abdominal cavity include the stomach, liver, gallbladder, spleen, pancreas, small intestine, kidneys, and large intestine. The abdominal cavity is lined with a protective membrane termed the peritoneum. The kidneys are located in the abdominal cavity behind the peritoneum, in the retroperitoneum. The viscera are also covered, in the front, with a layer of peritoneum called the greater omentum (or omental apron).