Contains structures within chest and abdomen (visceral organs). It's subdivided into 3 parts:
Thoracic cavity- separated from the rest of the ventral cavity by the diaphragm. Organs= lungs and heart) protected by ribs.
Abdominal Cavity-contains stomach, liver, intestines, and other organs
pelvic Cavity- contains reproductive organs, bladder, and rectum. (There is no actual physical structure dividing the abdominopelvic cavity (abdominal + Pelvic cavities).