What are the closed body cavities in the human body? The pericardial cavity (surrounding the heart), the thoracic cavity (surrounding the lungs and the pericardium, including the heart), and the peritoneal cavity (surrounding th … e visceral and internal reproductive organs).
The thoracic cavity has three compartments: the mediastinum and two pleural cavities. The mediastinum is home to the heart, trachea, great vessels, and some other structures. The pleural cavities are on either side of the mediastinum and contain the lungs and the pleural linings.
Mammalian embryos develop two cavities: the intraembryonic coelom and the extraembryonic coelom (or chorionic cavity). The intraembryonic coelom is lined by somatic and splanchnic lateral plate mesoderm, while the extraembryonic coelom is lined by extraembryonic mesoderm.