<P> The abdomen ( less formally called the belly , stomach , tummy or midriff ) constitutes the part of the body between the thorax ( chest ) and pelvis , in humans and in other vertebrates . The region occupied by the abdomen is termed the abdominal cavity . In arthropods it is the posterior tagma of the body ; it follows the thorax or cephalothorax . The abdomen stretches from the thorax at the thoracic diaphragm to the pelvis at the pelvic brim . The pelvic brim stretches from the lumbosacral joint ( the intervertebral disc 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 . </P>
<P> The abdomen ( less formally called the belly , stomach , tummy or midriff ) constitutes the part of the body between the thorax ( chest ) and pelvis , in humans and in other vertebrates . The region occupied by the abdomen is termed the abdominal cavity . In arthropods it is the posterior tagma of the body ; it follows the thorax or cephalothorax . The abdomen stretches from the thorax at the thoracic diaphragm to the pelvis at the pelvic brim . The pelvic brim stretches from the lumbosacral joint ( the intervertebral disc 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 . </P>
where is the abdominal part of the body
where is the abdominal part of the body
between the thorax ( chest ) and pelvis
between the thorax ( chest ) and pelvis