Preventing Communicable Diseases

Slides:



Advertisements
Similar presentations
Pre-AP Biology Chapter 40-2
Advertisements

Ch. 26 Communicable or Infectious Diseases
Defenses Against Disease
The Immune System In this lesson, you will Learn About…
Keeping Pathogens Out Every day your body is exposed to many pathogens. Your body can trap, repel or destroy may of these intruders. Most of these pathogens.
Preventing Communicable Diseases
Defence Against Disease
The Immune System Small Pox A white blood cell eating bacteria.
Lesson 2 Preventing Communicable Diseases How might behaviors such as wearing appropriate safety equipment help protect you from pathogens?
Lesson 2 Preventing Communicable Diseases How might behaviors such as wearing appropriate safety equipment help protect you from pathogens?
The Body’s Defenses The Body’s Defenses Barriers To Infection: Our First Line of Defense- Stopping the invasion  The body has main barriers to infection.
The Fight Against Infectious Diseases
35.2 Defenses against Infection
By learning about and practicing prevention strategies, you can help your body stay healthy.
The Immune System The Body’s Defense.
The Human Immune System
The Immune System: Specific and Non-Specific Responses to Pathogens
Pathogens  Microorganisms causing diseases  eg. bacteria viruses fungi protozoa.
The Immune System Pathogen : Viruses, bacteria, and other microorganisms that cause disease are called pathogens. Infection: Invasion of the tissues of.
The Human Immune System
Chapter 13- Infectious Diseases
Causes of Communicable Diseases
Preventing Communicable Diseases
The Immune System A complex group of defenses found in the body that fight against harmful substances and pathogens Pathogen: infectious agent (or germ)
Lines of Defense 1 Your body has many ways to defend itself.
Fighting Communicable Diseases (1:09) Click here to launch video Click here to download print activity.
Chapter 13 Your Body Systems Lesson 6 Your Immune System.
Infectious Disease A disease caused by a Pathogen that can be passed from person to person.
Communicable Diseases
Jeopardy Lesson 2Lesson 3Lesson 4 Vocab Q $100 Q $200 Q $300 Q $400 Q $500 Q $100 Q $200 Q $300 Q $400 Q $500 Final Jeopardy Lesson 1.
The Immune System. The Nature of Disease Infectious Diseases: Diseases, such as colds, that are caused by pathogens that have invaded the body. Pathogens.
Anatomy and Physiology
By Isabella de Jesus, Sarah Dillon, and Moriah Becker.
Sheila L. Jett, NBCT Montevallo Middle School The Immune System.
The Immune System. Immune system  Recognizes, attacks, destroys, and “remembers” each type of pathogen that enters the body  Immunity is the process.
Immune System Chapter 40-2.
Immune System Is a network of cells, tissues, organs and chemicals that fights off pathogens.
Chapter 38 The Human Defence System. A pathogen is an organism that causes disease. The general defence system: non specific acts against all pathogens.
Defending Infection.
IMMUNE SYSTEM Viruses, bacteria and other germs are all around us. Most of the time, a healthy immune system keeps us well. The purpose of the immune system.
Preventing Communicable Diseases How might behaviors such as wearing appropriate safety equipment help protect you from pathogens?
BELL WORK How often do you get sick? When you do get sick is it bad? Explain your answers.
FIGHTING DISEASE SBI 3C: OCTOBER DISEASE:  Pathogen:  A disease causing microorganism  Pathogenic bacteria produce toxins once they enter your.
Section 21.2 Defenses Against Disease Slide 1 of 28 Objectives Identify the body’s physical and chemical defenses against infectious disease. Describe.
Ch. 18 Fighting Disease Section 1: Infectious Disease.
The Immune System.
The Human Immune System Video. What is the immune system? The body’s defense against disease causing organisms, malfunctioning cells, and foreign particles.
35.2 Defenses Against Infection
THE BODY’S DEFENSES AGAINST INFECTION. THE BODY’S DEFENSES YOUR FIRST LINE OF DEFENSE- YOUR SKIN AND FLUIDS FORMS A BARRIER BETWEEN YOU AND PATHOGENS.
Section 21.2 Defenses Against Disease Slide 1 of 28 For each of your responses, explain how your behavior could affect your chances of getting or spreading.
The Immune System. Review What organisms that we’ve learned about can cause disease? Bacteria, protists, fungi, animals, viruses.
Protecting Yourself from Infectious Disease 1.Describe how the body fights infectious disease. 2.Summarize five things a person can do to stay well.
Communicable Diseases Chapter 24. Communicable Diseases  A disease spread from one living thing to another or through the environment.  Causes of diseases?
Ch. 21 Infectious Diseases
December 13, 2016 Bell ringer: Have you ever had a small cut or other injury that became red or painful or developed pus? Write describing what the area.
Science 8 Life Science Lesson L7 ~ The Immune System
The Immune System Lesson 2, Chapter 13.
Immune system.
Fighting Communicable Diseases
Mrs. Vogel 7th Grade Teen Living
The Immune System.
Communicable Diseases
The Immune System.
The Immune System.
Everything You Wanted to Know About the Immune System…And More!!!
Preventing Communicable Diseases
The Immune System.
What is the Job of the Immune System?
The Human Immune System
Science 8 Life Science Lesson L5 ~ The Immune System
Presentation transcript:

Preventing Communicable Diseases

Physical and Chemical Barriers Skin- first line of defense Few pathogens can get through the first layers skin cells Tears and saliva- contain enzymes that destroy pathogens Mucous membranes- produce mucous, a sticky substance that traps pathogens and helps dispose of them Line mouth, nose, bronchial tubes, and others

Cilia- hair-like projections that line parts of the respiratory system Sweep mucus and pathogens to the throat, where they can be swallowed or coughed out Gastric Juice- destroys pathogens in the stomach

Immune System Network of cells, tissues, organs, and chemicals that fight of pathogens The Inflammatory Response A reaction to tissue damage caused by injury or infection Blood vessels around the injury or infection expand to allow more blood to the area

Fluid and cells from the blood stream move into the area

Swelling and pain results from the pressure of fluid on nerves Phagocyte- white blood cell that attacks invading pathogens Engulf pathogens and kill them with chemicals Pus forms- dead white blood cells and damaged tissue Specific defenses are activated

Specific Defenses Specific defenses react to an invasion as a result of the body’s ability to recognize certain pathogens and destroy them. Immune response= immunity= the state of being protected against a particular disease. Your immune system has a “memory”

Memory cells circulate in blood stream and lymphatic system Specific types of white blood cells, T cells and B cells, have been activated by antigens and become memory cells Antigen- found on the surfaces of pathogens and toxins Capable of triggering an immune response Memory cells circulate in blood stream and lymphatic system

If measles enter again antibodies will attack immediately If memories cells recognize the antigens of a former invader certain white blood cells, B cells, make cells to stop it Antibodies- acts against a specific antigen, destroys or blocks pathogens from entering cells Killer T cells- attack and destroy infected body cells Ex: If you have had the measles or a vaccination your body remembers antigens If measles enter again antibodies will attack immediately

Active Immunity Occurs when your body develops antibodies for a specific pathogen Natural active immunity- when you are exposed to invading pathogens Artificial active immunity- antibodies develop in response to a vaccine Vaccine- dead or weakened pathogens that are injected into the body to stimulate the immune response

Active immunity can last a lifetime for some pathogens Other pathogens require repeating immunizations (vaccine)

Passive Immunity Receiving antibodies from another person or animal Passed from mother to child during pregnancy and nursing From injection of antibodies that were produced by animal are human that is immune to disease. This type of immunity is short lived

Care of the Immune System Eat balanced diet Drink water Get plenty of rest Fatigue reduces the effective ness of immune system Manage stress Avoid sharing Keep immunizations up to date Avoid sexual contact- some STDs destroy immune system

Four types of Vaccines Live-virus- from pathogens made in lab under conditions to cause the pathogen to lose some disease causing property Measles, mumps, rubella and chicken pox Killed virus- from dead pathogens Still stimulated immune response Flu, hepatitis A, rabies, and cholera

Toxoids- inactivated toxins from pathogens are used Tetanus New and second-generation-new types in development by scientist

Immunizations for All A person who is vaccinated not only protects themselves but those around them You will not spread the disease to other Keep immunization up to date Tetanus Diphtheria Pertussis (whooping cough) Measles, mumps, and rubella (MMR) Chicken pox Human Papillomavirus HPV Most high schools and colleges require some of these