Defenses in the first line are the same regardless of the type of pathogen. The third line of defence is engaged if the first and second lines of defence fail. The Immune System - Rabies This line of defense is the immune response. A type of white blood cells , called Phagocytes, are released. takes five to ten days for the body to reach its maximum production of B and T cells - Kill harmful pathogens Key Terms It also secretes fluids and other substances that . If a pathogen breaches these barriers, the innate immune system provides an immediate, but non-specific response. Each of the three lines plays a distinct role with the University's control environment. _____ A. Overview of the Immune System. The immune system in mammals can be broken down into 2 major subsystems, the innate and the adaptive. PDF What are the 3 lines of defence against disease The body's second line of defence - Science Learning Hub Like your heartbeat or your digestion, the immune response is a function you don't control. Adaptive body defenses are the body's specific defense system, or the third line of defense Functional system that recognizes antigens (foreign molecules) and acts to inactivate or destroy them . Recognize and neutralize harmful substances from the environment. immune system | Description, Function, & Facts | Britannica The Immune System has 3 Lines of Defense Against Foreign Pathogens: 1. If the immune system does not function properly, diseases and disorders can develop. PDF What are the 3 lines of defense against pathogens Antibodies attach to an antigen and attract cells that will engulf and destroy the pathogen.
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