Which of the following represents a first line of defense against pathogens?

Question

Quizplus · Accepted Answer

The skin acts as a physical barrier preventing pathogens from entering the body. It is considered the first line of defense against pathogens.

Option B) Inflammation is a response of the body's immune system to infection or injury, it is not considered to be the first line of defense against pathogens.

Option C) Lymphocytes are white blood cells that play a crucial role in the body's immune system, but they are not considered to be the first line of defense against pathogens.

Option D) Phagocytosis by macrophages is a process in which macrophages engulf and digest pathogens, but this is a second line of defense that occurs after pathogen penetration.

Which of the Following Represents a First Line of Defense