PPT-6: Immunity

Lesson Objectives Describe the different forms of immunity in the body AO1 D Describe what is meant by phagocytosis and how it acts as a defence mechanism AO2 C Explain the role of . Chapter 22. Functions of the Immune System. Destroy pathogens (organisms that cause disease). Detect and kill abnormal cells such as cancerous cells. Remove dead cells and debris from the body. Pathogens. Oral immunity and . immunopathological. processes in the mouth.  Immunity. Microorganisms are in the air we breathe and in/on the food we eat;. Thus our epithelial surfaces are continuously exposed to microorganisms;. versus Collective Immunity. . Dr . Niamh. Stephenson . (Public Health & Community Medicine, Medicine, UNSW. ) . & . Dr . Mark Davis . (Sociology, Monash). 8th . Australian Influenza . Symposium . Adaptive (specific) Immunity. The general idea:. body . can recognize . specific. . invader and act to destroy . that specific invader.. Adaptive . immunity develops during an individual. ’. s lifetime.. Oral immunity and . immunopathological. processes in the mouth.  Immunity. Microorganisms are in the air we breathe and in/on the food we eat;. Thus our epithelial surfaces are continuously exposed to microorganisms;. Adaptive (specific) Immunity. The general idea:. body . can recognize . specific. . invader and act to destroy . that specific invader.. Adaptive . immunity develops during an individual. ’. s lifetime.. In short, it is safe to state that immunity refers to the rules and principles that govern diplomatic relations between states and other entities with legal personality within the international system.. Cells of the Immune System. Physical & Chemical Barriers. Innate and Adaptive Immunity. Innate Defenses. Nonspecific physical and chemical barriers that contribute to resistance against infection. disease. Disease-any condition that impairs the normal functioning of the body. Violation of homeostasis. Homeostasis-ability of the body to keep proper internal conditions no matter what is happening outside of it. Veterinary assisting program. Responsibilities . The immune system is responsible for protecting the animal from potentially harmful organisms attempting to invade.. It is a VERY complicated system. It must be able to recognize substances that are foreign to the body by recognizing what is naturally .  . Immunity . is defined as the capacity of the body to resist the pathogenic agents. It is the ability of the body to resist the entry of . different types of . foreign bodies like bacteria, . virus, . of certain substances in . the blood and lymph stream. . These . substances are known as antibodies. . This immunity is inborn. . . Antigens. , the foreign substances that attack the body, stimulate the production of antibodies. . The resistance that an individual acquires during life by recognising and selectively eliminating specific foreign molecules is known as acquired immunity.. This is displays four characteristic features:. Features of adaptive immunity:. Adaptive immunity is characterized by the following:. 1. Antigenic specificity: (. highly specific).. 2. Diversity : . ( each antigen there is specific T-cell and B-cell for it)..