Translations:Rumpfwand/17/en
The lower part of the trunk is the pelvis. It consists of the two hip bones (Ossa coxae) containing the internal pelvic organs. The abdomen is located between the thorax (sternum tip height) and the pelvis (up to the groin ligament). Inside the abdomen is a fluid-filled cavity - the abdominal cavity. The diaphragm forms the upper limit of the abdominal cavity. Below it it is bounded by the hip bone and the pelvic floor. The back reaches from the loin or coccyx to the lower part of the neck. This includes the spine, the posterior parts of the ribs and soft tissues such as connective tissue and back muscles. The thorax is formed by the thoracic spine, the sternum and the ribs. The respiratory muscles are attached to the outside and inside of the thorax.