PPT-Cells, Organs, and Microenvironments of the Immune System

Kuby Immunology 7e Chapter 2 Cells of the immune system Immune responses result from coordinated activities of many cells organs and microenvironments in the body Hematopoietic stem cells HSCs have the ability to differentiate into many types of blood cells. What is the immune system?. The body’s defense against disease causing organisms, malfunctioning cells, and foreign particles. The First Line of Defense. ~Skin~. The dead, outer layer of skin, known as the . What is the Immune System?. Our body’s natural defensive line to foreign material called microbes.. Without an immune system, microbes would quickly attack our bodies.. Our body has three levels of defense against foreign invaders. . 11.3 (. pg. 367 – 269). Malfunctions. Abnormal functioning of the immune system. Two types of problems:. Immunodeficiency diseases. Inappropriate attacks of the immune system against non-threatening agents.. Solutions to improve treatment. Current . immunosuppressors. …. …suppress the entire immune system, leaving patients more vulnerable to everyday infections and higher rates of cancer.. However, this is necessary because the immune system attacks parts of the body which are work well and are needed (in MS, myelin is targeted, causing demyelination) but we cannot isolate the suppression to just one impact of the immune system so to protect the targeted area we must lower the guard of everywhere else. . Non-specific Immunity. Born with some immunity . Helps prevent disease. Helps slow disease progression. First line of defense. Non-specific, cont. .. Physical Barrier- . unbroken skin . Non-specific Immunity. Born with some immunity . Helps prevent disease. Helps slow disease progression. First line of defense. Non-specific, cont. .. Physical Barrier- . unbroken skin . Innate Immunity. Receptors on T and B Cells Are Specific for Each Antigen. Innate and Adaptive Immune Systems. Antigen Presentation. Adaptive Immunity. Function of the Immune System. Tumor Escape Mechanisms. Chapter 31 Sections 1-4, 6. Pathogens and Human Illness. What are some causes of diseases?. We can have infectious and noninfectious diseases.. Infectious can be passed from one person to another because of germs. What are some examples?. 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 . Chapter 43. Innate Immunity. nonspecific defense that is active immediately upon infection. found in all animals & plants. includes:. outer covering. skin or shell. chemical secretions. @ openings to interior of body. HIV. (Human immunodeficiency virus)- a virus that attacks the immune system.. Infection with HIV can be prevented. Responsible decisions is the most valuable tool for protection against HIV.. Example: Abstinence from sexual activity and injecting drugs reduce your risk.. Chapter 4. Introduction. Molecules recognized as “non-self” are antigens. Several mechanisms to protect itself . First level of protection include physical and biochemical-skin, acid in stomach. Second level of protection phagocytic cells, enzymes, and proteins. . Lecture 5. Organs & Organ Systems. The Immune System. . The Immune System. . The immune system is a barrier to the pathogens.. Our immune system is made up of both . individual cells. and . What is the Immune System?. The immune system is a vast network of cells and tissues.. Located throughout your body.. Involves numerous types of cells, organs, proteins, and tissues.. The immune system can distinguish between your tissues and foreign tissue/ invaders..