1. Physical barriers kin, mucous membranes and their secretions infection fighting chemicals, in tears saliva. other body fluids 2. Nonspecific- Innate defenses phagocytosis-(engulfing cells) inflammatory response ver antI-microbial proteins complement, collectins, cytokines 3. Specific response Acquired Immunity Humoral immune response B cells, antibodies, memory cells Cellular immune response T cells, cytokines, memory cells1. Physical barriers - skin, mucous membranes and their secretions - infection fighting chemicals,in tears, saliva, other body fluids 2. Nonspecific - Innate defenses - phagocytosis - (engulfing cells) - inflammatory response - fever - anti-microbial proteins complement, collectins, cytokines 3. Specific response - Acquired Immunity - Humoral immune response - B cells, antibodies, memory cells - Cellular immune response - T cells, cytokines, memory cells