BIOL 1010 Chapter Notes - Chapter 28: Innate Immune System, Extracellular Fluid, Nostril
14 May 2017
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Macrophages: ( big eaters ) large phagocytic cells in interstitial fluid. Histamine: induces neighboring blood cells to dilate and become leaky. Causes area to become red, warm, and swollen. Complement system: a group of approximately 30 different kinds of proteins that circulate in inactive form in the blood. (e. g. some help trigger inflammatory response) Innate immunity: set of defenses that are active immediately upon infection, whether or not the pathogen has been accounted previously. Insects immune system includes recognition proteins that trigger the production of antimicrobial peptides that destroy the invader. Animal innate defenses: skin, mucous membranes, nostril hairs, cilia on the respiratory tract. Animal innate immune cells = red blood cells. Macrophages ( big eaters ): large phagocytic cells in interstitial fluid. Natural killer (nk) cells: attack cancer cells and virus infected cells by releasing a chemical. Interferons: proteins produced by virus-infected cells that help limit spread of virus.
