Abdomen consists of thorax and pelvic region.Thorax extends from chest to pelvic bone, which forms diaphragm.On the other hand,Pelvic region consists of digestive system such as liver, pancreas, spleen and gallbladder.All these components work together to digest the food in abdominal region.Food is entered in to the mouth and going through esophagus enter into the wall of stomach, where digestion process has been started. After digestion process, food is channelize through small intestine, where useful nutrients has been absorbed and forwarded waste products with some nutrients toward large intestine.Hence, waste product is excreted through cloaca (a small opening).
