1 / 11

IMMUNOLOGY

IMMUNOLOGY. How your body defends itself from foreign invasion. DEFENSE SYSTEM. NON-SPECIFIC. SPECIFIC. NOT differentiate between invaders Same response for pollen  HIV 1 & 2 nd lines of defense. Creates specific response for each invader

helmut
Download Presentation

IMMUNOLOGY

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. IMMUNOLOGY How your body defends itself from foreign invasion.

  2. DEFENSE SYSTEM NON-SPECIFIC SPECIFIC • NOT differentiate between invaders • Same response for pollen  HIV • 1 & 2nd lines of defense • Creates specific response for each invader • Ability to remember & target invaders (antibodies) • 3rd line of defense

  3. DEFENSE SYSTEM Major chemicals/proteins: • Antigen • Unique protein (name tag) all living tissue • Antibody • Protein matches to an antigen  used to “remember” • You have a different antibody for every different foreign molecule ever entered your body • Histamine • Chemical triggers allergy response (runny nose, water eyes, blood flow) • Interferon • Protein release by infected cells  “interferes” w/ viral reproduction • Interleukin • Chemical messenger controls temperature regulation

  4. NON-SPECIFIC DEFENSES Same response to all invaders 1st Line of Defense • Physical Barriers • Attempts to prevent invasion • Skin • Mucous membranes • pH • Digestive enzymes 2nd Line of Defense • Inflammatory Resp. • Triggered by tissue damage • Increase blood flow to promote clotting • WBC’s consume all foreign material • Fever

  5. 2nd Line Defense (cont.) • Types of White Blood Cells (Leukocytes) • Monocyte  appear @ site of infection & can move into tissue & form macrophages • Macrophage  (big eaters & long life span), ever present, consume old cells, dust & pathogens • Neutrophils  most abundant, short life span • Eosinophils  destroy parasites (worms) • Basophils  not directly destroy, release chemicals that trigger all others (histamine) • Natural Killers (NK)  destroys infected cells

  6. SPECIFIC DEFENSE 3rd Line 0f defense DIFFERENT RESPONSE FOR EACH INVADER • Humoral Response • B-cells • “highlights” foreign material • Produces Antibodies – “memory cells” • Cell-Mediated Response • T-cells • “killer” cells • Consume invaders highlighted by the b-cells

  7. TYPES OF IMMUNITY PASSIVE active • Requires no effort • Antibodies given out • Examples: • Requires effort • Body must produce antibodies by fighting off infection • Examples: • Natural – • Artificial –

  8. Why does your body want you to feel Crummy????

  9. ROLE OF FEVER • T-cells (kill invaders) • antibodies (remember invaders) • wbc’s (consume invaders) • pathogen reproductive rates

  10. ALLERGIES • An exagerated immune response to typically harmless environmental antigens • Only activate 1st & 2nd lines of defense • Never reach 3rd – never form antibodies that would prevent re-occurance • Why  • Overmedicated, over vaccinated & under exposed • Immune system learns it job by practicing, if you give it nothing to practice on, it will find something (grass, pollen, food allergies, etc.)

  11. BABY ARTICLE • Read the article & be prepared to respond to the following essay prompts: • VACCINATION, ISOLATION or EXPOSURE? • Which method(s) would you choose for your own children? • Describe several ways to improve or boost you and/or your future children’s immune system? • Name method & describe how it helps.

More Related