9 th BIOLOGY The Immune System PowerPoint Presentation, PPT - DocSlides

9 th  BIOLOGY The Immune System PowerPoint Presentation, PPT - DocSlides

2018-10-21 7K 7 0 0

Description

Non-specific Immunity. Born with some immunity . Helps prevent disease. Helps slow disease progression. First line of defense. Non-specific, cont. .. Physical Barrier- . unbroken skin . ID: 691364

Direct Link: Link:https://www.docslides.com/kittie-lecroy/9-th-biology-the-immune-system-1417016 Embed code:

Download this presentation

DownloadNote - The PPT/PDF document "9 th BIOLOGY The Immune System" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.

Presentations text content in 9 th BIOLOGY The Immune System

Slide1

9th BIOLOGY

The Immune System

Slide2

Non-specific Immunity

Born with some immunity Helps prevent diseaseHelps slow disease progressionFirst line of defense

Slide3

Non-specific, cont.

Physical Barrier- unbroken skin Skin oil acidic, inhibits pathogens

Chemical barrier-

saliva, tears, nasal secretions

All contain lysozyme

Mucus- sticky

Cilia- sweep irritants away

HCl in stomach, pH of 2

Slide4

Non-Specific Response

Cellular defense- WBCsNeutrophils, macrophages are phagocyticEngulf and destroy antigen

Complement proteins- enhance phagocytic response

Interferon-

secreted by virally infected cells

Binds to cells, produces antiviral proteins to prevent viral replication

Slide5

Slide6

Slide7

Non-Specific Response, cont.

Inflammatory response-Pathogens damage tissue

chemicals

released attract phagocytosis

Increase capillary permeability to increase blood flow to the area

Result is more WBCs to the rescue

Slide8

Slide9

Specific Immunity

Lymphatic System-Includes organs and cell that filter lymphLymph is tissue fluid that bathes body cells

Lymphatic Organs-

Contain lymphatic tissue, lymphocytes, connective tissue

Lymphocytes- WBC produced in red bone marrow

Include: lymph nodes, tonsils, spleen, thymus

Slide10

Slide11

Lymphatic Organs

Lymph nodes- filter lymph and remove foreign particlesTonsils and adenoids- form a protective ring around nasal and oral cavities

Spleen

- stores blood and destroys damaged RBCs

Thymus

- above the heart, T cell maturation

Slide12

Slide13

B Cells

B lymphocytes-Mature in bone marrowReact with antigen

Antibody

factories- memory for

antigen

, quicker immune response upon next exposure.

Antibody

stimulation caused by vaccination or direct exposure to antigen

Slide14

T Cells

Mature in thymusFirst responder cellActivation of T cells required to continue cascade of eventsMacrophage activation-

Macrophage engulfs antigen and displays pieces of it on surface

T cells bind to presented antigen

 activates immune system, including B cells

Slide15

T Cell Response

Cytotoxic T cells- destroy pathogens and release cytokinesCytokines stimulate other immune cells to react

Slide16

Slide17

Passive and Active Immunity

Passive- acquire antibodies from somewhere elseInfants acquire some antibodies from their mothers to protect them until their immune system matures

Receiving injections of antibodies from other humans or animals

Anti-venom

Hep

A

Rabies

Tetanus

Slide18

Passive and Active, cont.

Active- you make the antibodies yourselfVaccination

-

series

1

st

shot- primary response

Booster shot- secondary response- quicker and more intenseHaving diseaseChickenpox

Slide19

Immune System Failure

HIV/AIDS- targets CD-4+ receptor on T cellsShuts down immune response by deactivating T cellsMild, flu-like symptoms upon first exposure

Tests for HIV check for presence (HIV+) or absence(HIV-) of antibody to HIV


About DocSlides
DocSlides allows users to easily upload and share presentations, PDF documents, and images.Share your documents with the world , watch,share and upload any time you want. How can you benefit from using DocSlides? DocSlides consists documents from individuals and organizations on topics ranging from technology and business to travel, health, and education. Find and search for what interests you, and learn from people and more. You can also download DocSlides to read or reference later.