HOW DOES OUR BODY FIGHT OFF INFECTION??? Our Body’s Defenses.

Slides:

Advertisements

Similar presentations

AVOIDANCE & TREATMENT OF INFECTIOUS DISEASE

Advertisements

The Immune System In this lesson, you will Learn About…

What has happened when a cut in your skin becomes infected? What could have been done to prevent it?

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.

Lesson 2 – The Body’s Defenses Chapter 5 – fighting diseases.

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.

✚ ✚ Body Defense: Mucous Location: lining of respiratory system Presence: some mucous is always present, more is produced at specific times Specific/Non-specific:

The Immune System Pathogen : Viruses, bacteria, and other microorganisms that cause disease are called pathogens. Infection: Invasion of the tissues of.

Causes of Communicable Diseases

Communicable Disease Mr. Surdy 8 East Health Objectives Describe the cause of infectious diseases. Identify the way in which diseases are spread. Identify.

The immune system The Fortress Analogy.

Defenses Against Infection Human Immune System. KEY CONCEPT The immune system has many responses to pathogens and foreign cells.

Good Morning Monday May 13, Mrs. Schramm 1. Please have a seat. 2. Write down the Learning Objectives. 3. Begin answering the Warm Up questions.

By: Diego Mora Eugenio Martin-Carreras. The immune system is a system of biological structures and processes within an organism that protects against.

Communicable Disease Disease passed from one person to another.

Communicable Disease 8 Health.

Ms. Kelly 8 th Grade Health.  The body's defense against germs and other invaders  Made up of special cells, proteins, tissues, and organs.

Anatomy and Physiology

Mr. Ramos The Immune System. Introduction to the Human Immune System The immune system protects the body from disease. White Blood Cells (WBC), or leukocytes,

The Immune System Protecting the Body. First Line of Defence The skin keeps out bacteria and viruses The skin keeps out bacteria and viruses Acidic oils.

Immune System Is a network of cells, tissues, organs and chemicals that fights off pathogens.

Section 4.  Objective  You will understand the functions of various body systems.

Communicable Diseases Chapter 12: Lesson 1. BELL ACTIVITY List as many different diseases as you can.

The Bodies’ Defenders Function Illustration Function

Fighting Disease Think pair share What is a disease? Use an example to help you answer.

 What is our immune system?  A system that prevents disease and infection  The immune system “cleans the body” by removing what?  Pathogens such as.

Communicable Disease 8 Health.

31.2 Immune System KEY CONCEPT The immune system is a body system that fights infection and prevents illness.

Your Body’s Defense. Pathogens:  Bacteria- Some infections bacteria cause include sore throats (tonsillitis or strep throat), ear infections, cavities,

Your Body’s Defense. THE BODY’S CAPABILITY OF REMOVING OR KILLING FOREIGN SUBSTANCES, PATHOGENS AND CANCER CELLS Immunity.

BELL WORK How often do you get sick? When you do get sick is it bad? Explain your answers.

Blood and Body Defenses Summary of Important Points.

Our Personal Cleaning Army!

The Immune System.

Your Body’s Defense. Physical Defenses  First line of defense  Skin  Hair  Mucous  Cilia  Saliva  Tears  Sweat  Digestive tract.

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!. Group 1 Non-Specific Defenses (innate immunity) Your skin acts as a protective barrier; sweat, dead cells and oil help your skin block.

Do Now 3/24/15 1.When was the last time you got sick? What did you have? What were your symptoms? 2.Why do people get sick? 3.What happens to your body.

31.1 KEY CONCEPT Germs cause many diseases in humans.

The job of the immune systems is to fight off pathogens & infections.

Infectious and Noninfectious Diseases

The Immune System Lesson 2, Chapter 13.

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!!!

BELL WORK Write about the last time you were sick. How did you feel and what happened?

Many body systems protect you from pathogens.

Many body systems protect you from pathogens.

Many body systems protect you from pathogens.

NOTES – THE IMMUNE SYSTEM – NON SPECIFIC DEFENSES

Many body systems protect you from pathogens.

Many body systems protect you from pathogens.

Pathogens and vectors. Suppose the case of an elder that has been diagnosed with a virus- caused disease called dengue. Who is the pathogen? Who is.

Many body systems protect you from pathogens.

Many body systems protect you from pathogens.

Many body systems protect you from pathogens.

Your Body’s Defense.

3.1 The Immune System Infectious diseases are caused by pathogens.

3.1 The Immune System Infectious diseases are caused by pathogens.

Many body systems protect you from pathogens.

KEY CONCEPT The immune systems consists of organs, cells, and molecules that fight infections. Benchmark SC.912.L.14.52: Explain the basic functions of.

Presentation transcript:

HOW DOES OUR BODY FIGHT OFF INFECTION??? Our Body’s Defenses

The First Line of Defense  Stops germs from getting into the bloodstream.  Traps, repels and destroys germs BEFORE they make you sick.

Five Barriers that Protect the Body  Skin – the body’s largest barrier  Mucous membranes – Found in ears, eyes, nose and throat  Saliva  Tears  Stomach acid

The Second Line of Defense  Immune System  A combination of body defenses made up of cells, tissues and organs that help fight infections.  White Blood Cells  Cells that work together to warn, track down and destroy germs.

3 Types of White Blood Cells  Phagocytes  T-Cells  B-Cells

Phagocytes These white blood cells send a warning that a germ (invaders) has entered the bloodstream

T-Cells These white blood cells track down the invading germ and mark the germ with antibodies.

B-Cells These white blood cells destroy germs and anything else marked with an antibody. Sometimes the b-cells need back-up support in the form of medicine in order to fight the really tough germs.