Final answer:
The first action in the embalming process should be surface disinfection, which is crucial for minimizing microbial contamination.
Step-by-step explanation:
The first action that should be taken in the embalming process is surface disinfection. This is a critical step to ensure that the risk of microbial contamination is minimized both to the body and to the embalmer. Before any surgical procedures such as arterial injection or aspiration are performed, the body's surface is thoroughly disinfected. This practice is not only essential in embalming but is also fundamental in sterilization of medical equipment and maintaining the sterility of vaccine components. Just like in tissue specimen storage, preventing microbial growth is of utmost importance to preserve the condition of the specimen.