Chapter 20: The Immune System The immune system has two intrinsic systems: 1. Innate (nonspecific) defense system 2. Adaptive (specific) defense system The immune system is a functional system rather than structural; there are no specific immune system organs Pathogen: a disease-causing agent; anything foreign in our body that causes disease Three lines of defense: 1st: external barriers 2nd: several non-specific defense mechanisms 3rd: immunity‚ specific resistance to disease
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stress affect the immune system The immune system is designed to defend the body against millions of antigens that would otherwise invade it. None of these things are able to get in when your immune system is working efficiently‚ but the moment your immune system stops functioning properly‚ the opportunity for antigens to attack is available. Kiecolt-Glaser (1984) carried out a natural experiment investigating whether the stress of short-term stressors had an effect on immune system functioning
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in order to understand how an individual’s immunological phenotype is the result of its genotype‚ the environment‚ and development. For the first experiment‚ Dr. Brown’s research was testing how selection on basal and maximal metabolic rates affect immune function. In addition‚ Dr. Brown had four hypotheses for this particular experiment‚ two were for basal metabolic rate and two were for maximal metabolic rate. Moreover‚ trade-off with BMR decreases as basal metabolic rate increases‚ and assimilation
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Cancer is the uncontrolled growth of abnormal cells in the body. When cells in part of the body become overactive‚ cancer begins. Many kinds of cancer start because of the out of control growth of abnormal cells. How can you prevent cancer? Research shows that there are ways to prevent cancer. Avoiding smoking cigarettes and exposure to smoke will decrease the chances of getting lung cancer. Fruits‚ vegetables and a well balanced diet are important to keep healthy and will help repair damaged
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ENG 3073‚ sec. 01 Genre TV vs. Reality Sadly‚ the days of scripted television may soon be gone. Reality programming is rapidly consuming much of today’s entertainment. One of the genres that is taking the reality hit the hardest is the sci-fi/supernatural genre. Shows in this category are th polar opposite of reality TV and are suffering for it. More networks are letting go of quality escapism and are instead churning out cookie cutter versions of reality. The sci-fi/supernatural genre is
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Assignment 1. Hypersensitivity *Poison Ivy- The body’s immune system is normally in the business of protecting us from bacteria‚ viruses‚ and other foreign invaders that can make us sick. But when urushiol from the poison ivy plant touches the skin‚ it instigates an immune response‚ called dermatitis‚ to what would otherwise be a harmless substance. Hay fever is another example of this type of response; in the case of hay fever‚ the immune system overreacts to pollen‚ or another plant-produced substance
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Cardiovascular and Lymphatic-Immune Systems Worksheet Cardiovascular System Label the parts of the organ or structure‚ and describe the structure and its function. NumberStructureCharacteristics Function 1Left ventricleIt is the thickest of all the chambers. After flowing into the left atrium and through the mitral valve‚ blood enters the left ventricle before it is pumped out through the aortic valve into the aortic arch and onward to the rest of the body.Pumps oxygenated blood to tissues all over
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than 60‚000 Americans die of pneumonia‚ an inflammation of the lungs that’s usually caused by infection with bacteria‚ viruses‚ fungi or other organisms. Pneumonia is a particular concern for older adults and people with chronic illnesses or impaired immune systems‚ but it can also strike young‚ healthy people. Worldwide‚ it’s a leading cause of death in children. There are many kinds of pneumonia ranging in seriousness from mild to life-threatening. Although signs and symptoms vary‚ many cases of pneumonia
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Linkages between Concepts and the Indian Marketing Reality Hedonism – A Devotion to Pleasure as a Way of Life Products that completely depend on hedonism Soft-drinks‚ biscuits‚ chocolates‚ fast foods and snacks completely depend on hedonism associated with the taste-buds. “Country of origin” effects are quite useful in such categories. There is already an existing image in the minds of the consumers‚ and brands use them to further their proposition. French champagnes and Swiss Chocolates are examples
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Work effectively with others 1.1 Knowledge questions: 1. List the different types of workgroups? There are two different types of groups: Formal which is a group that has a specific task to do in order to meet their goals? Informal groups are for e.g. sporting clubs. 2. Explain the meaning of group dynamics? Group dynamics means the personalities of individuals in a group and one person can change the whole dynamics of the group. 3. Explain the meaning of synergy? The meaning
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