Hypersensitivity or allergy refers to the immune system responding _____. a) in an exaggerated way to a foreign substance b) too little too late c) inadequately to an antigen d) to its own tissues as if they were foreign Answer: a Difficulty: Easy Learning Objective 1: LO 18.1 Explain the meaning of the terms hypersensitivity and immunodeficiency. Section Reference 1: Section 18.1 Overview of Immunological Disorders 2) Immunodeficiency refers to the immune system responding _____. a) in an exaggerated
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inventions of vaccines can prevent some diseases in the childhood. In 1960‚ the health authorities recommend the kids to get five vaccines—smallpox‚ diphtheria‚ tetanus‚ whooping cough and polio. The first time a child is exposed to a disease‚ the immune system can’t create antibodies quickly enough to keep
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Arthritis(RA) is the most common type of autoimmune arthritis and occurs when your immune system mistakenly attacks your own body’s tissues. It is also an autoimmune disease which means that certain cells of the immune system do not work properly and start attacking healthy tissues. It is an autoimmune disease that causes chronic inflammation of the joints and other areas of the body. It is triggered by a faulty immune system and affects the wrist and small joints of the hand‚ including the knuckles and
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of other organisms. It is recorded that at the end of 2013‚ 35 million people were living with HIV globally. That same year‚ 2.1 million people became newly infected‚ and 1.5 million died of AIDS related causes. HIV is a virus which attacks the immune system‚ weakening the ability to fight infections and disease. The most common ways of getting HIV include unprotected sex‚ sharing
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United States are vaccinated against preventable disease. (Brown. Pg.2) Immunization is a vaccination process which stimulates the body immune system for protection against a particular contagious disease. (Berger‚ p.107) When pathogen invades our body our immune system triggers a series of responses to identify and remove the pathogen from the body. Immune
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AS Psychology Unit 2: Stress-illness and The Immune System Notes The immune system refers to the mechanism in the body that provides a defence against infections‚ e.g. bacteria‚ viruses‚ parasites and toxins. The immune system fights off invaders that cause disease (antigens). The cells in the system are leukocytes (white blood cells) called phagocytes and lymphocytes. Phagocytes are the first line of defence‚ providing a general barrier against antigens. Leukocytes are more focused and are
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this happens‚ it is known as an infection which in turn make people ill. Our body uses its immune system to fight of the infection that has began spreading in the body. Vaccines are used to help our immune system develop an immunity by imitating the infection. This means that there is a small amount of the bacteria or virus introduced to the body but it does not make the person ill. This causes the immune system to create t-lymphocyttes and b-lymphocytes‚ white blood cells that attack cells that have
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time period is 7–10 days. Commonly‚ the further the injury from the central nervous system‚ the longer the incubation
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bring these two types of molecules together so that they can effectively activate even more T cells (“up to 20% of all T cells”) in a non-specific manner due to the superantigen binding to the Variable B region of T cells. Cytokines‚ which are immune system proteins which are secreted for the purpose of carrying signals amongst cells‚ are released as a result of this increased activation of T cells and may even induce toxic shock. This Toxic Shock Syndrome is due to Staphlyococcus aureus‚ characterized
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health status. Health compromising behavior by individual is the main factor in health. TOPIC 1: OVERVIEW OF HIV & AIDS The origin of HIV AIDS Human Immunodeficiency Virus HIV is a lent virus‚ which is a class of viruses that attack the immune system. Lent viruses are in turn part of a larger group of viruses known as retroviruses. The name ’lent virus ’ literally means ’slow virus ’ because they take such a long time to produce any adverse effects in the body. These viruses have been
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