Free Powerpoint Presentations

Immune System
Page
1

DOWNLOAD

PREVIEW

WATCH ALL SLIDES

Slide 1

The Immune System

The Immune System

Slide 2

Vocabulary

Vocabulary

Infection

Invasion by foreign organisms such as viruses, fungi, bacteria

Immunity

Long term resistance to re-infection by organisms previously encountered

Antigens

Any material that elicits an immune response

Slide 3

Types of Immunity

Types of Immunity

Innate (inborn) immunity

Immunity that is genetically coded

You never suffer from an illness for which you have innate immunity

Acquired (adaptive) immunity

Active

As a response to an actual or artificial exposure

Passive

Immunity introduced by antibodies from an outside source

Slide 4

Types of Immunity

Slide 5

Lymphocytes  Immune Cells

Lymphocytes Immune Cells

Bone marrow makes a variety of B cells

B cells produce antibodies

Thymus makes a variety of T cells

Killer T cells are responsible for cell-mediated (non-specific response to antigen) immunity

Helper T cells interact with B cells to produce antibodies

Suppressor T cells interact with B cells to suppress antibody production

Slide 6

Antibodies

Antibodies

Highly specific proteins that bind to nonself materials

Each B cell can make only one antibody, and all descendents will produce the same antibody

B Cells have antibodies on their surface identical to the one that they produce

Long lived B cells (Memory Cells) quickly produce large quantities of antibodies to prevent illness

Slide 7

Antibody Structure

Antibody Structure

Slide 8

Edward Jenner and Smallpox (1798)

Edward Jenner and Smallpox (1798)

Observation

Milk maids who got cowpox were resistant to cowpox

Experiment

Injected a boy with pus from cowpox sores on infected udders

Results

Boy was protected against smallpox

Vaccination, from vaca, Latin for cow

Slide 9

Edward Jenner and Smallpox (1798)

Slide 10

Small Pox

Small Pox

Vaccination led to world-wide eradication announced in 1979 by World Health Organization

Slide 11

Polio: Not Eradicated

Polio: Not Eradicated

Slide 12

Diptheria: Not Eradicated

Diptheria: Not Eradicated

Go to page:
 1  2 

Contents

Last added presentations

2010-2018 powerpoint presentations