Final answer:
Phagocytosis is the process by which neutrophils, a type of white blood cell, engulf and neutralize harmful bacteria in the human blood system, preventing the spread of infection and serious conditions like septicemia.
Step-by-step explanation:
The process illustrated, similar to the ingestion of bacteria in the human blood system, is known as phagocytosis. This is a critical aspect of the body's immune response where white blood cells, such as neutrophils, identify and ingest harmful microorganisms. When bacteria enter the bloodstream, they can be swiftly identified by these immune cells. The phagocytes then engulf the bacteria and neutralize them through a series of actions within the cell, a sac called the phagolysosome, effectively removing the threat from the body. This is essential for preventing infections from spreading and worsening into serious conditions such as septicemia and sepsis.