The Immune System:
These two parts of the immune system, innate and adaptive, do not work separately. They overlap and support one another through chemical signals sent via the bloodstream and lymph nodes. So, the next time you feel your heartbeat or you breathe, remember that your immune system is working just as hard, if a bit more slowly—it’s certainly helping to keep you healthy!
The Adaptive Immune System:
Unlike the innate immune system, the adaptive immune system responds specifically to an invading virus or bacteria. The cells that contain the invading pathogen have an antigen, which the antibody responds to. Antibodies are the primary weapons of the immune system, since they are specifically designed to combat an invader.
The adaptive immune response consists of B cells and T cells.
- B cells make antibodies, while T cells show B cells what kinds of antibodies to make.
- T cells also kill virus-infected cells, so that the virus can’t spread.
B and T cells respond specifically to an invading organism, and remember when they have encountered a particular pathogen before. That way, when the pathogen invades the body again, the adaptive immune system can respond quickly and efficiently, preventing an infection.
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Immune System Videos:
Ameoba Sisters Immune System
The Immune System: B Cell, T Cell, Soldier, Spy
