PPT-The Lymphoid System and Immunity Overview

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;. A. The body has two main mechanisms of defenses. 1. Innate defense mechanisms – first line of defense. A) These defenses are non-specific and . inherited. Immunity Overview. B) Examples:. 1. ) Physical barriers. Mike Clark, M.D.. Lymphatic System. Composed of . lymphoid cells, tissues, organs, and vessels. The function of the lymphatic system is to . (1) fight infection (2) carry lipids absorbed from the GI tract to the bloodstream and (3) return fluids and plasma proteins that escaped from the bloodstream back to the bloodstream . Kuby. . Immunology. , . 7e: Chapter 1. A historical perspective of immunology. What is immunity?. Immunity is the state of protection against foreign pathogens or substances (antigens). Latin term . 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 . Lymphatic System. Consists of three parts. A network of lymphatic vessels (lymphatics). Lymph. Lymph nodes. Lymphatic System: Functions. Returns interstitial fluid and leaked plasma proteins back to the blood. A. n . extensive drainage network that helps keep bodily fluid levels in balance and defends the body against infections. .. Together with lymphoid organs and tissues, provide the structural basis of the immune system. Chapter 13. The Lymphatic System. THE LYMPHATIC SYSTEM. Lymph. — fluid in the tissue spaces that carries protein molecules and other substances back to the blood. Lymphatic vessels . — permit only one-way movement of lymph. 01.12.18. Tutorial Information. All content is presented in a question-answer format . (helpful . for making flashcards) . Answers to practice questions can be found in the slide notes . Lecture 2: Immune cells and organs. Dr. . Bipin. Patel. introduction. INTRODUCTION. The term “immunity” is referred to the . resistance of an individual . towards . injury. caused by . microbial stimuli . (microorganisms & their products) & . Learning Objectives. Introduction to Immunity. Innate Immunity. Lymphoid Tissue. Introduction to Immunity. Immunitas. : Freedom from. Immunity is the ability of body to destroy potentially hazardous/harmful foreign substances, if entered in body, that is it provides FREEDOM from any foreign invader.. Dr. S. Deborah. . Assistant Professor,. . Department of Biotechnology,. J. amal Mohamed College, . . Trichy-20. . Mobile: 9952270978. What is immunity . Immunity is the ability of the body to defend itself against disease-causing organisms. Everyday our body comes in contact with several pathogens, but only a few results into diseases. The reason is, our body has the ability to release antibodies against these pathogens and protects the body against diseases. This defense mechanism is called Immunity.. 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).. Its . how your body recognizes and defends itself against bacteria, viruses, and substances that appear foreign and harmful.. IMMUNE SYSTEM- . Its a network of tissues and organs containing cells that recognize foreign substances in the body and destroy .