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BBS : Infectious Diseases Dr Garwin Sing
Epithelial Barriers to Microbial Infection: Physical Epithelial cells joined by tight junctions Exfoliation of surface cells Mucous flow by ciliated epithelia (respiratory tract)
Epithelial Barriers to Microbial Infection: Chemical Enzymes: Lysozyme (tears, saliva, sweat) Pepsin (stomach) pH:Fatty Acids/amino acids (skin) Gastric acids (stomach) Antimicrobial:Transferrin (mucus)
Epithelial Barriers to Microbial Infection: Competition Gut Flora
Protection from Infectious Agents Innate ImmunityFever, interferon, neutrophils, macrophages, NK cells Adaptive ImmunityB cells, T cells
Viruses Bacteria Fungi Parasites Anatomy Physiology Immunity Commensals
Sources of Infection: Exogenous InhalationCommon cold, flu, Legionnaire’s Disease, Coccidioidomycosis IngestionTyphoid fever, tapeworm, cryptosporidium, Hepatitis A STDGonorrhea, HIV WoundTetanus, Rabies Insect BiteMalaria, Yellow Fever, Dengue
Sources of Infection: Endogenous Gute.g E coli Skine.g. staphylococcus Tonsils Throat e.g streptococcus Bloode.g. EBV Lungse.g Candida, CMV, streptococcus
Introduction to Immunology: Immunology began as a branch of microbiology; it grew out of the study of infectious diseases and the body’s response to them.
INTRODUCTION TO IMMUNOLOGY:. DEFINITIONS Immunity: resistance to disease, specifically infectious disease and tumors. The immune system: the collection.
THE IMMUNE STYSTEM. The Immune System The body must defend itself against potentially dangerous viruses, bacteria and other pathogens. It must also.
Anatomy and Physiology For The First Class 2 nd Semester 1.
Human Anatomy and Physiology Immunology: Innate defenses.
Protection Against Disease Natural Defence Mechanisms.
The Immune System Non-Specific Immunity. What You Should Know The human body has the capacity to protect itself against pathogens, some toxins and cancer.
TOPIC: Immunity AIM: How does the immune system protect the body against disease?
AP Biology Immune / Lymphatic System lymphocytes attacking cancer cell phagocytic leukocyte lymph system Fighting the Enemy Within!
Non-Specific Defenses April 3, Body fights disease in 2 ways 1. Non-specific defense system Protects body from all foreign substances 2. Specific.
Chapter 21 The Immune System. Function of the Immune System The immune system is a collection of mechanisms that protects against disease by identifying.
Introduction Immunity: “Free from burden”. Ability of an organism to recognize and defend itself against specific pathogens or antigens. Resistance: Ability.
Body Defenses Immune System. Microbes and You Microorganisms are widely distributed in the environment and carry out many beneficial functions. Decomposition.
Mechanisms for preventing pathogens from entering the body Mechanisms for initially dealing with any foreign substances present in body Mucous membranes.
Natural Defense Mechanisms. Immunology Unit. College of Medicine & KKUH.
Pathogens Microorganisms causing diseases eg. bacteria viruses fungi protozoa.
STUDY OF IMMUNITY. NON-SPECIFIC RESISTANCE 1.Immunity. Types of immunity 2.Innate immunity. Mechanism of innate immunity.
Application of Immunology Clinical diagnosis Treatment Prophylaxis Research.
The Immune System. Introduction Immune system The body’s defenses against pathogens that produce disease 2 types of immunity 1.Nonspecific defenses (Innate.
THE IMMUNE SYSTEM. A pathogen is an infectious agent that causes disease; most are viruses, bacteria, or protists. Organisms have tiered levels of.
DR. SYEDA SALEHA HASSAN LECTURE 3: INNATE IMMUNITY BIOT
Basic Immunology University of Tabuk Faculty of Applied Medical Science Department of Medical Laboratory Technology Mr.AYMAN.S.YOUSIF MSc.Medical Microbiology.
Nonspecific Defense Against Disease Section 33.2.
Immune System. v=Non4MkYQpYA.
Immune system and Cancer. Overview 1. Innate (nonspecific) defense system a. surface barriers b. internal defenses 2. Adaptive (specific) defense systems.
Infectious Diseases. Causes of Infectious Diseases Pathogens 1.Bacteria: single celled microorganism, after entering the body they multiply quickly by.
Essentials of Human Anatomy & Physiology Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Slides 12.1 – Seventh Edition Elaine.
Presenter : Samina Sattar Palijo Post R/N BScN 1 st Semester 2015 Topic related to : Life Science Faculty: Ramesh Kumar New life college of nursing Date.
Immunity Anatomy & Physiology Tony Serino, Ph.D. Biology Department Misericordia Univ.
HOW DOES INFECTION OCCUR?. Key Terms 1. Microorganisms = small, living organisms not visible to the naked eye 2. Pathogens = microorganism that cause.
The Fight Against Infectious Diseases. Innate (means you are born with it) Immunity Innate Immunity – The body’s first line of defense against any and.
The immune system is: Defense body mechanism an interacting set of specialized cells and proteins designed to identify and destroy foreign invader.
DION KEVIN LUKE LEARY RACHAEL-CATHERINE HARTNETT The Immune System Concept In innate immunity, recognition and response rely on shared traits of.
NONSPECIFIC HOST DEFENSES Innate (nonspecific immunity) Defenses present at birth.
ELAINE N. MARIEB EIGHTH EDITION 12 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings PowerPoint ® Lecture Slide Presentation by.
Lymphatic and Immune System The Body’s Defense. Nonspecific Defense First Line of Defense –Skin –Mucous Membrane –Secretions.
Lymphatic System The Body’s Defense System. Nonspecific Defense First Line of Defense –Skin –Mucous Membrane –Secretions.
Page The body has two defense systems for foreign materials that form the immune system Immunity—specific resistance to disease (such as.
Immunity and Disease. Disease Infection = when a microorganism or pathogen gets into our body. – Pathogen: anything that causes disease. – Microbe/Microorganism:
Immunity Your body’s defense against infection!. Immune System A group of organs and tissues that protect you from foreign invaders Skin Thymus gland.
✚ ✚ Body Defense: Mucous Location: lining of respiratory system Presence: some mucous is always present, more is produced at specific times Specific/Non-specific:
Chapter 9 Innate Immunity: Nonspecific Defenses of the Host.
The Immune System Chapter 43 ~. PCA: List the organs involved in the immune sytem:
Infectious Disease. Essential Questions What are some causes of infectious disease? How do the 2 pathogens (bacteria & virus) spread to cause disease?
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