What does the term purge refer to in a postmortem context?

In the context of a postmortem, the term "purge" specifically refers to the evacuation of substances that can occur after death, often due to pressure buildup within the body. After a person has died, decomposition begins to release gases, which can create pressure in the cavities of the body. This pressure can lead to the expulsion of bodily fluids from natural openings or through incisions made during an autopsy or preparation. Understanding this process is crucial for those involved in mortuary science, as it pertains to the proper handling and preparation of remains.

The other choices focus on different aspects of dealing with remains. Removal of bodily fluids before burial typically refers to embalming processes, and while cremation preparation is important, it does not directly encapsulate the meaning of "purge." The final cleansing of remains with chemicals also pertains to preparation methods but again does not directly relate to the concept of purge as it pertains to the natural processes occurring postmortem.