What does the term "blood drainage" refer to in embalming?

The term "blood drainage" in embalming specifically refers to the removal of blood from the body during the embalming process. This procedure is essential because it prepares the body for preservation by allowing embalming fluids to be introduced into the circulatory system without interference from the existing blood. When blood is drained, it helps to create space for the embalming solution, which facilitates the distribution of chemicals throughout the body and enhances the preservation process. The accurate understanding of blood drainage is crucial for effective embalming as it directly impacts the chemical preservation of the remains and the overall appearance of the deceased during viewing.