Question

Immunity - how does our immune system protect us from disease? ap bio

Answer 1

The immune system is a complex system that protects the body from pathogens and other harmful agents through three lines of defense.

Step-by-step explanation:

The immune system is a complex system that protects the body from pathogens and other harmful agents. It has three lines of defense to prevent infections and diseases. The first line of defense includes physical barriers like the skin and mucous membranes, while the second line of defense involves cells like phagocytes and natural killer cells that destroy pathogens. The third line of defense is the adaptive immune response, which involves the production of antibodies and specialized cells to target specific pathogens.

Answer 2

the immune system has two lines of defense. specific immunity and non-specific immunity. first is the non-specific which is things like skin and mucus. this immunity defends against all types of pathogens. phagocytes engulf any pathogen so it falls under non-specific. specific immunity is when your body protects against a specific pathogen, for example when antibodies are made it is specific because the antibody is made specifically for that type of antigen. so the immune system protects us by using specific and non-specific immunity, to keep pathogens out and destroy them if they enter your body.