how the immune system works
1st and 2nd line defenses
1st line: dead skin barrier, mucus, saliva, tears contain lysozyme (enzyme that breaks down bacterial cell walls), acidic oil and sweat kills many bacteria
2nd line: inflammatory response, increased white blood cell production, blood vessel expansion, infectedtissue becomes swollen, painful, fever (heat kills pathogens)
recognizing the pathogen
broadest sense of anything that can produce disease
abbreviation of antibody generator, is any substance which serves as a target for the receptors of an adaptive immune response.
An antibody (, also known as an immunoglobulin , is a large Y-shape protein produced by plasma cells that is used by the immune system to identify and neutralize foreign objects such as bacteria and viruses.
the body is attempting to fight invading pathogens by swelling infected tissue, expanding blood vessels, fever.
Phagocytes are cells that protect the body by ingesting harmful foreign particles, bacteria, and dead or dying cells.