My Immune System Project By Johnathan B...

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By: mia_ql (21 month(s) ago) Private Comment

very very nice ppt.thank u so much.

By: yzel (31 month(s) ago) Private Comment

nice presenttion..can you email this presentation to me.. if it's ok, here's my email ad yzhell26_mdm@yahoo.com.ph thanks
..

By: eraldz (33 month(s) ago) Private Comment

CAN YOU E-MAIL THIS PROJECT TO pes_0_6@hotmail.com. THANK YOU

By: lisadhatch (33 month(s) ago) Private Comment

I thought it was cute and informative!

Presentation Transcript

The Immune System :

The Immune System

THE THREE LINES OF DEFENCE :

THE THREE LINES OF DEFENCE

Slide 3:

There are “Three lines of Defense” that all contribute to the Immune System ,each an important part in the destruction of Pathogens (Pathogens are any foreign substance found in the body that causes an Immune Response)

Slide 4:

First Line of Defense

Slide 5:

Skin Thick layers of Skin make the penetration of Pathogens nearly Impossible

Slide 6:

The First Line of Defense Sweat and Oil on your skin kill most Pathogens they come in contact with due to the fact that your Sweat is acidic.

Mucus Membranes :

Mucus Membranes

Slide 8:

Thick walls of Mucus line your Nose, Throat , and Stomach. Mucus acts as a kind of glue that traps any Pathogens that happen to be going by . The Cilia (little hairs) then move the Pathogen filled Mucus out of the body

Secretion :

Secretion Mucus Tears Saliva Sweat

Slide 13:

The various secretions push out pathogens and also contains a chemical called Lysozyme that breaks through the cell walls of Bacteria therefore killing them.

Mucus :

Mucus

Tears :

Tears

Saliva :

Saliva

Sweat :

Sweat

Slide 18:

Second line of Defense

Innate Immune Response :

Innate Immune Response There are four important non-specific (Innate) defenses that come into action once a pathogen has entered the body. Inflammatory Response Temperature Response Proteins White Blood Cells

The Inflammatory Response :

The Inflammatory Response A series of events that repress infection and speed healing through dilation of blood vessels.

Slide 21:

Histamines dilate blood vessels and bring white blood cells to the area of infection thus causing Inflammation

Slide 22:

Swelling ,Redness, and Puss may also occur (Puss—A build up of millions of dead white blood cells )

Temperature Response :

Temperature Response To fight pathogens the body will raise its temperature a couple degrees above normal to try and kill them.

Slide 24:

Fever helps to combat bacteria due to the fact that Pathogens cannot survive high temperatures.

Proteins :

Proteins A variety of proteins provide a non-specific defense from Pathogens

Slide 26:

Interferon is a protein release by cells infected with a virus. (Its causes nearby cells to create an enzyme that prevents Viruses from making proteins and RNA)

White Blood Cells (Phagocytes) :

White Blood Cells (Phagocytes) Neutrophils , macrophages and natural killer cells wait within tissue for pathogens to annihilate.

Slide 28:

Neutrophils overwhelm and destroy pathogens by sacrificing themselves for wellbeing of the rest of the body

Slide 31:

Macrophages consume and kill pathogens as well as clear the body of dead cells and debris.

Slide 33:

Natural killer cells puncture the cell membranes of pathogens, allowing liquid to rush in and make the cell burst

The Third Line of Defense :

The Third Line of Defense

Slide 36:

The 3rd line of defense is Called “The Acquired Immune Response” is a specific Immune response unlike the first and second line of defense. Its is an Immune response that you gain by being infected with pathogens or virus’ and combating them. Acquired Immune Response

Slide 37:

Helper T-Cells activate both cytotoxic T cells and B cells

Helper T-Cell :

Helper T-Cell

Slide 39:

The helper T Cells recognize Virus’s that would otherwise go un-noticed. It then alerts the B-Cells. The B cells first analyze the virus then they construct a antibody that is specifically for that one virus.

Slide 41:

After the Virus is smothered in antibodies and cannot infect anything other cells the killer t cells are called to the seen to dispose of the incapacitated virus and kill the infected cells.