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3 -15 Introduction to the Immune System Student Power Point

3 -15 Introduction to the Immune System Student Power Point. Ms. Blalock, Ms. Hartsell , Mr. Luckman. Activity # 2 – Specific Immune Response. READ ALL OF THE INSTRUCTIONS!. Activity # 2 – Specific Immune Response. Work in your group to complete the questions in Activity # 2

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3 -15 Introduction to the Immune System Student Power Point

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  1. 3-15 Introduction to the Immune SystemStudent Power Point Ms. Blalock, Ms. Hartsell, Mr. Luckman

  2. Activity # 2 – Specific Immune Response • READ ALL OF THE INSTRUCTIONS!

  3. Activity # 2 – Specific Immune Response • Work in your group to complete the questions in Activity #2 • Make sure there is a… • Time keeper-make sure your group gets done on time • Speaker-be ready to speak to the Discussion Question at the end of Activity #2 • Laptop handler-go through the Power Point and follow directions • Station manager-return the laptop to the back when the activity is over

  4. Activity # 2 – Specific Immune Response • What does “specific” mean anyways? • “Specific”is someone or something that is specially suited for a purpose or need. • An example of “specific” is someone saying exactly which jacket they want someone to grab for them.

  5. Activity # 2 – Specific Immune Response • A specific immune response involves… • Antigens and antibodies

  6. In daily life we might speak of viruses, bacteria, and toxins. However, when reading about the immune system you’ll often come across the words antigen and pathogen. • An antigen is a foreign substance that triggers a reaction from the immune system. Antigens are often found on the surfaces of bacteria and viruses. • A pathogen is a microscopic organism that causes sickness. Hostile bacteria and viruses are examples of pathogens.

  7. Some white blood cells make a specific protein, called an antibody, that will respond to an antigen. Antibodies are released from the white blood cells so that they can seek out intruders and help destroy them. White blood cells produce antibodies at an amazing rate and can release tens of thousands of antibodies per second. • When the Y-shaped antibody finds a matching antigen, it attaches to it. The attached antibodies serve as an appetizing coating for eater cells such as the macrophage (a white blood cell that eats pathogens).

  8. Antibodies also neutralize toxins and viruses, preventing them from infecting new cells. Each branch of the Y-shaped antibody can bind to a specific antigen, so while one branch binds to an antigen on one pathogen cell, the other branch could bind to another cell - in this way pathogens are gathered into larger groups that are easier for macrophages to eat.

  9. Activity # 2 – Specific Immune Response • Use the handout at your table to use the following website: • http://www.nobelprize.org/educational/medicine/immuneresponses/game/index.html

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