The cavity that involves both the thoracic cavity, abdominal cavity, and pelvic cavity is called the ventral body cavity.

The ventral body cavity is a large, anteriorly located cavity in the human body that houses several vital organs and structures. It is divided into two main subdivisions: the thoracic cavity and the abdominopelvic cavity. The thoracic cavity is located superiorly and contains the heart, lungs, major blood vessels, esophagus, and other structures. The abdominopelvic cavity is located inferiorly and is further divided into the abdominal cavity and pelvic cavity.

The abdominal cavity contains organs such as the stomach, liver, spleen, gallbladder, small intestine, and large intestine. It plays a role in digestion, nutrient absorption, and waste elimination. The pelvic cavity is located inferior to the abdominal cavity and contains organs such as the bladder, reproductive organs (uterus in females, prostate in males), and parts of the large intestine. It is involved in urinary function, reproduction, and elimination of waste.

The ventral body cavity is essential for the proper functioning of various bodily systems and serves as a protective housing for these vital organs. Its division into thoracic, abdominal, and pelvic cavities allows for organization and specialization of different organ systems within the body.