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Immunity and Infection Chapter 17
© 2008 McGraw-Hill Companies. All Rights Reserved. 2 Chapter seventeen The Chain of Infection Links in the Chain Transmitted through a chain (six links) Pathogen - disease causing microorganism Reservoir - natural environment of the pathogen: Person, animal or environmental component Portal of Exit Means of transmission Direct transmission Indirect transmission Portal of entry Penetration of the skin Inhalation Ingestion New host Breaking the Chain
© 2008 McGraw-Hill Companies. All Rights Reserved. 3 Chapter seventeen
© 2008 McGraw-Hill Companies. All Rights Reserved. 4 Chapter seventeen Bodys Defense System Physical and Chemical barriers Skin, mucous membranes, respiratory tract The Immune System Immunological Defenders Neutrophils Macrophages Natural killer cells Dendritic cells Lymphocytes T-cells Helper, Killer, and Suppressor B-cells Antibodies Memory T and B cells
© 2008 McGraw-Hill Companies. All Rights Reserved. 5 Chapter seventeen
© 2008 McGraw-Hill Companies. All Rights Reserved. 6 Chapter seventeen The Inflammatory Response Histamine. Dilation of blood vessels, heat, redness, and swelling. The immune response Phase 1 – Dendritic cells are drawn to the site Phase 2 – Helper T cells multiply Production of Killer T and B cells Cytokines – chemical messengers Phase 3 – Killer T cells strike Cell-mediated immune Anti-body mediated immune response Phase 4 – Last Phase – Suppressor T-cells Slow down activity
© 2008 McGraw-Hill Companies. All Rights Reserved. 7 Chapter seventeen
© 2008 McGraw-Hill Companies. All Rights Reserved. 8 Chapter seventeen Immunity An infected person will never get the same illness again. Lymphocytes create amplification of the immune response are reserved by memory T and B cells Symptoms and contagion Incubation – viruses are multiplying in the body or when bacteria are actively multiplying Will not feel symptoms until the second or third phase of the immune response cycle Prodromal period – the infected host has acquired immunity
© 2008 McGraw-Hill Companies. All Rights Reserved. 9 Chapter seventeen Immunization The process of priming the body to remember an encounter with a specific antigen. Types of vaccines VACCINE- Introduction of a killed or weakened pathogen to stimulate the body to produce antibodies. (active immunity). PASSIVE IMMUNITY- Injection of antibodies produced by other human beings or animals. ACQUIRED IMMUNITY- The ability of a memory lymphocytes to remember a previous infection. (chicken pox).
© 2008 McGraw-Hill Companies. All Rights Reserved. 10 Chapter seventeen Immunization Issues Vaccine shortages in the U.S. Deaths from vaccine-preventable disease worldwide Vaccine safety
© 2008 McGraw-Hill Companies. All Rights Reserved. 11 Chapter seventeen Allergy: The Bodys Defense System Gone Haywire The Bodys Defense System Gone Haywire Allergies Allergens Pollen, Dander, Dust mites, Molds, Food, Insects The Allergic response Immunoglobulin (IgE) Anaphylaxis
© 2008 McGraw-Hill Companies. All Rights Reserved. 12 Chapter seventeen
© 2008 McGraw-Hill Companies. All Rights Reserved. 13 Chapter seventeen Dealing With Allergies Avoidance Medication Immunotherapy
© 2008 McGraw-Hill Companies. All Rights Reserved. 14 Chapter seventeen
© 2008 McGraw-Hill Companies. All Rights Reserved. 15 Chapter seventeen The Troublemakers: Pathogens and Disease Bacterium – Microscopic single celled organism Pneumonia Meningitis Strep Throat and other streptococcal infections Toxic shock and other staphylococcal Tuberculosis Lyme Disease and other tickborne infections Ulcers Other Bacterial infections Tetanus Pertussis Urinary tract infections
© 2008 McGraw-Hill Companies. All Rights Reserved. 16 Chapter seventeen Antibiotic Treatment Actions of Antibiotics Antibiotic resistance Proper antibiotics usage Dont take an antibiotic every time you are sick Use antibiotics as directed Never take an antibiotic without an prescription
© 2008 McGraw-Hill Companies. All Rights Reserved. 17 Chapter seventeen Type of Pathogens Viruses – (parasites – take what they need) Common Cold Influenza Measles, Mumps and Rubella Chickenpox, Cold Sores, and other herpes-virus infections Herpes simplex virus (HSV) types 1 and 2 Epstein-Barr virus (EBV) Viral encephalitis Viral Hepatitis Poliomyelitis Rabies Warts Treatment
© 2008 McGraw-Hill Companies. All Rights Reserved. 18 Chapter seventeen
© 2008 McGraw-Hill Companies. All Rights Reserved. 19 Chapter seventeen Types of Pathogens Fungi – Primitive plant – Yeast infections, athletes foot, and ringworm Candida albicans Protozoan – Microscopic single-celled animal – Malaria, African sleeping sickness, Giardiasis, Tricomonias, Trypanosomiasis, and Amoebic dysentary. Parasitic worm – Largest organism that can enter the body – Tapeworm, Hookworm, and Pinworm. Prions - Fetal degeneration disorders of the CNS, linked to proteinaceous infectious particles. Lack DNA and RNA
© 2008 McGraw-Hill Companies. All Rights Reserved. 20 Chapter seventeen Emerging Infectious Diseases Selected Infections of concern West Nile virus Severe acute respiratory syndrome (SARS) Rotavirus Escherichia coli Hantavirus Ebola
© 2008 McGraw-Hill Companies. All Rights Reserved. 21 Chapter seventeen Factors Contributing to Emerging Infections Drug Resistance Poverty Breakdown of public health measures Environmental changes Travel and Commerce Mass food production and distribution Human behaviors Bioterrorism
© 2008 McGraw-Hill Companies. All Rights Reserved. 22 Chapter seventeen Other Immune Disorders: Cancer and Autoimmune Diseases If the immune system breaks down Getting older HIV infection Chemotherapy Autoimmune diseases Rheumatoid arthritis Systemic lupus erythmatosus
© 2008 McGraw-Hill Companies. All Rights Reserved. 23 Chapter seventeen Giving Yourself a Fighting Chance: How to Support Your Immune System How to support your immune system Public Health Taking care of yourself Nutrition Exercise Rest Moderation of Lifestyle Controlling Stress
Immunity and Infection Chapter 17
Immunity and Infection Chapter 17 © 2012 McGraw-Hill Companies. All Rights Reserved.
Immunity and Infection Chapter 17. Immunity and infection 2 The Chain of Infection Links in the ChainLinks in the Chain –Transmitted through a chain (six.
©2010 McGraw-Hill Companies. All Rights Reserved Chapter 13 Immunity and Infection.
©2012 McGraw-Hill Companies. All Rights Reserved 1 Chapter 13 Immunity and Infection.
Chapter Seventeen Immunity and Infection. Major Pathogens Major Pathogens VirusesViruses BacteriaBacteria FungiFungi Protozoan Parasitic worms Prions.
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Immunity and Infection Chapter 17. The Chain of Infection Transmitted through a chain of infection (six links) ◦ Pathogen: Disease causing microorganism.
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Do Now: Define Infectious Disease Pathogen Microorganism Tetanus Antibodies Active immunity Passive immunity Vaccine Bacteria Virus Fungi Protozoan.
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Immunity and Infection Chapter 17. The Chain of Infection Transmitted through a chain of infection (six links) ◦ Pathogen: ◦ Reservoir: ◦ Portal of.
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19-1 © 2009 The McGraw-Hill Companies, Inc. All rights reserved Principles of Asepsis PowerPoint® presentation to accompany: Medical Assisting Third Edition.
The Immune System The Body’s Defense. The Body’s Lines of Defense The body has three lines of defense against pathogens: 1. Barriers - skin, breathing.
Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings PowerPoint ® Lecture Slide Presentation prepared by Michael Hall Chapter.
Chapter 40. Helps protect body from disease Collects fluid lost from blood vessels and returns fluid to circulatory system.
Viruses Require living cells to reproduce, inactive by themselves. Penetrates a host cell, takes control of the cell to manufacture more viruses. Usually.
Infectious Diseases. Bell Work: Do Now: Name 4 pathogens Name an infectious disease caused by each.
Communicable Diseases Chapter 24 Lesson: 1. Vocabulary Terms Communicable disease, pathogen, infection, viruses, bacteria, toxin, vector.
Disease = any change, other than injury, that disrupts the normal functions of the body Diseases can be inherited (ex. Hemophilia) Diseases can.
Chapter 35 Immune System and Disease Infectious Disease SC.912.N.1.1,SC.912.N.2.1,SC.912.L.14.52, HE.912.C.1.8,LA Causes Of Infectious.
Click on a lesson name to select. Chapter 37 Immune System Section 1: Infectious Diseases Section 2: The Immune System Section 3: Noninfectious Disorders.
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