THE IMMUNE SYSTEM Definition of the Immune System The human immune system is a collective network of tissues‚ glands‚ and organs that work in a coordinated effort with each other to guard our bodies from foreign antigens such as viruses‚ bacteria‚ and infection causing microorganisms. For the immune system to work properly‚ two things must happen: first‚ the body must recognize that it has been invaded‚ either by pathogens or toxins or by some other threat. Second‚ the immune response must be
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the main points of the article. Explain how it relates to this week’s lessons. Give examples with your response. More than 60 million men‚ women‚ and children in the U.S. carry the Toxoplasma parasite‚ but very few have symptoms because the immune system usually keeps the parasite from causing illness. Toxoplasmosis is a parasite that causes illness. For an example‚ cats eats birds and rodents. Toxoplasmosis is normally carried within birds and rodents. Some people like cats and have
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| 1‚ 4 | Module-2(Week of Aug. 26) | Cellular Function * Genetic and developmental disorders * Neoplasia | 6‚ 7 | Module-3(Week of Sept. 2) | Alterations in the Immune and Inflammatory Response * Inflammation and immunity * Alterations in immune function | 9‚ 10 | Module-4(Week of Sept. 9) | Alterations in the Immune and Inflammatory Response * Malignant disorders of white blood cells * Unit-1 Exam * Unit-1 Case Study | 11 | Unit-2 | Module-5(Week of Sept. 16) | Alterations
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Chapter 21‚ Immunity Pathogens: A disease-producing microbe Immunity: The state of being resistant to injury‚ particularly by poisons‚ foreign proteins‚ and invading pathogens. Susceptibility: the lack of resistance to injury‚ foreign proteins and invading pathogens Innate immunity includes external physical and chemical barriers (skin and mucous membranes) and various internal defenses (phagocytes‚ natural killer cells‚ antimicrobial proteins); It does not involve specific recognition of a microbe
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John Frelinger Dr. Travis Organic Evolution 30 April 2012 Evolution of the Immune System Animals are constantly bombarded by an immensely varied array of disease causing pathogens including bacteria‚ fungi‚ viruses and other parasites. The number of microbes living in the human body outnumber the actual human cells by a factor of 10‚ and for every single species of animal and plant on Earth‚ there are viruses that infect them. With the unrelenting threat of disease-causing pathogens all around
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Cert_Bio II - Body Defence 93 39. Which of the following are concerned with the prevention of bacterial infections in different parts of the human body? Alimentary canal Respiratory tract Blood A. digestive enzymes hair white blood cells B. mucus cilia red blood cells C. acid mucus blood platelets D. bile salts mucus white blood cells 94 Directions: Questions 48 and 49 refer to the graph below which shows the changes in the concentration of antibodies in the blood of
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: Azmawida bt Abdullah General Purpose : To Inform Specific Purpose : To inform my audience about the benefits of honey to health. Central Idea : The health benefits of honey are‚ it is nature’s energy booster‚ a greet immunity system builder and it is a natural remedy for many ailments. Introduction I. Today I would like to share with you all ladies and gentlemen about the benefit of honey. In Al-Quran in surah An- Nahl‚ ayat 68-69 the meaning is "And your Lord revealed
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* AP IMMUNE SYSTEM * An animal must defend itself against unwelcome intruders -- the many potentially dangerous viruses‚ bacteria‚ and other pathogens it encounters in the air‚ in food‚ and in water. * Herpes simplex-1 (Herpes labialis‚ HSV-1) * Herpes simplex 2 (HSV-2‚ Herpes genitalis) on thigh * Three cooperative lines of defense have evolved to counter these threats. * Two of these are nonspecific -- that is‚ they do not distinguish one infectious agent from another
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GENERAL PRINCIPLES OF THE IMMUNE SYSTEM Introduction Constituents of Immune ? system Types of immune response Introduction The immune system is: The body defense mechanism an interacting set of organs‚ specialized cells and proteins designed to identify and destroy foreign invader Ministry of defence of the human body The immune system must be able to: differentiate between normal component of the body (“self”) and material that is not native to the body “nonself” A highly specialized receptors
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The innate immune system is referred to as the first line in host defense against invading pathogens and preserve host integrity [1]. Of them the innate immune cells have sensors such as macrophages and dendritic cells (DCs) detect molecular components of foreign microorgan¬isms known as pathogen-associated molecule patterns (PAMPs) through PRRs. Its highly developed ability to recognize microbial patterns and host derived danger signals relies on so-called PRRs‚ especially on the TLRs‚ RLRs and
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