What is abdomen?

  • (noun): The cavity containing the major viscera; in mammals it is separated from the thorax by the diaphragm.
    Synonyms: abdominal cavity
    See also — Additional definitions below


The abdomen (less formally called the belly, stomach, or tummy), in vertebrates such as mammals, constitutes the part of the body between the thorax (chest) and pelvis. The region enclosed by the abdomen is termed the abdominal cavity. In arthropods it is the posterior tagma of the body; it follows the thorax or cephalothorax. Anatomically, the abdomen stretches from the thorax at the thoracic diaphragm to the pelvis at the pelvic brim. The pelvic brim stretches from the lumbosacral angle (the intervertebral disk between L5 and S1) to the pubic symphysis and is the edge of the pelvic inlet. The space above this inlet and under the thoracic diaphragm is termed the abdominal cavity. The boundary of the abdominal cavity is the abdominal wall in the front and the peritoneal surface at the rear.

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Some articles on abdomen:

Chalk-fronted Corporal
... light reddish brown, with white shoulder stripes and a black stripe down the middle of the abdomen ... males develop a white pruinescence on the top of the thorax and at the base of the abdomen, while the rest of the abdomen turns black ... with a dusting of gray pruinescence near the base of the abdomen a few develop the same color pattern as the males ...
Abdomen - Invertebrates
... The invertebrate abdomen is built up of a series of upper plates known as tergites and lower plates known as sternites, the whole being held together by a ... The abdomen contains the insect's digestive tract and reproductive organs, it consists of eleven segments in most orders of insects though the eleventh segment is absent in the adult of most higher ... In the Collembola (Springtails) the abdomen has only six segments ...
Sarcophaga Bullata - Morphology - Abdomen
... The abdomen is grey and slender, with a median black stripe ... resemble the blow fly, but never have metallic colored abdomens ... The genitalia is located on the end of the abdomen and in the males is a bright red color ...
Sympetrum Vicinum - Description - Adult
... Mature males are brownish black on the face and thorax and have a red abdomen, while immature males have a yellow thorax and a yellowish brown abdomen ... Females have a brown thorax and a brownish-red abdomen ...
Linea (disambiguation)
2007 Linea (Stargate), character in the TV series Anatomy Linea alba (abdomen), fibrous structure that runs down the midline of the abdomen Linea alba (cheek), horizontal streak on the mucosal ...

More definitions of "abdomen":

  • (noun): The region of the body of a vertebrate between the thorax and the pelvis.
    Synonyms: venter, stomach, belly

Famous quotes containing the word abdomen:

    The abdomen is the reason why man does not readily take himself to be a god.
    Friedrich Nietzsche (1844–1900)