Final answer:
It is true that neutrophils are short-lived and macrophages long-lived. Neutrophils rapidly respond to infections and die after engulfing a few pathogens, while macrophages can consume many pathogens and have an ongoing role in immune surveillance and antigen presentation.
Step-by-step explanation:
The statement that neutrophils are considered short-lived and macrophages are considered long-lived is indeed true. Neutrophils are a type of white blood cell and are part of the body's first response to infection. They are phagocytic cells that move from the bloodstream to infected tissues and typically die after phagocytizing only a few pathogens. Neutrophils are known for producing cytokines, which are vital for pathogen destruction and signaling other immune cells to the site of infection. On the other hand, macrophages develop from monocytes and are large phagocytic cells that can phagocytize a substantial number of pathogens. They are not only involved in directly attacking and removing pathogens but also play a crucial role in antigen presentation, activating the adaptive immune system.
Macrophages are indeed long-lived due to their role as sentinels, constantly surveilling for potential pathogens and also cleaning up dead cells and debris. Hence, while neutrophils are known for their rapid response and short lifespan, macrophages are strategically positioned for long-term defense and maintenance of the body's internal environment.