Which cavity contains the heart and lungs?

The thoracic cavity is the correct answer because it houses the heart and lungs, which are vital organs for the respiratory and circulatory systems. This cavity is located in the upper part of the trunk, which is separated from the abdominal cavity by the diaphragm. The thoracic cavity is further divided into two pleural cavities, each containing a lung, and the mediastinum, which contains the heart, trachea, and esophagus. Recognizing the specific contents and functions of body cavities helps have a better understanding of human anatomy and the organization of organs within the body.

In contrast, the abdominal cavity contains organs related to digestion and excretion, such as the stomach, liver, and intestines; the pelvic cavity houses the reproductive organs and bladder; and the cranial cavity encases the brain. Each of these cavities has distinct roles and holds different organ systems, making it essential to accurately identify where specific organs are located within the body.