Immune SystemBy. Amanda, Iva, Tavey, Natsumi

Contaminants

0Cells

0Proteins

0Tissues

0Organs

0Blood vessels

0Leukocytes

Function

0Helps attacks germs

0Tries to keep away diseases from going into your body

0Attacks organisms and substances

0Always on alert

Cells

0Leukocytes-white blood cells

0T cell-helper cells

0B cells are started by T-helper cells, made into plasma cells

0Plasma cells spreads antibodies that can bind to the antigen in the bloodstream

0Few B cells become memory B cells, can survive for decades

0Memory B cells can help with future diseases that you’ve had before, gives immunity

Immune Response0 Pathogen enters the body

0 Macrophages surround the pathogens and display antigens

0 Macrophages with antigen fragments on them are called antigen presenting cells

0 Antigen presenting cells connect with T-helper cells

0 Macrophage sends alarming signal called interleukin-1 which stimulates T-helper cell

0 Secretes interleukin-2

0 T and B cells

0 Cytotoxic cells that recognize the antigen on surfaces of infected cells bind it and make chemicals that kill it

Antigens

0causes your body to create antibodies against it

0a foreign substance

0Anything that triggers the immune response

0Can be a microbe

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Cuts Mosquitoes

0Helps to close it up

0 Inflammation and pus are side effects

Red and itchy bump

Your system is working to heal it

What if the immune system stopped working?

0Bacteria, parasites, toxins will go into your body

0Unable to stop them from coming in

0Dismantles body, takes a few weeks

0A skeleton is left

What weakens the immune system

Overdosing on sugar

Alcohol

Food allergens

Lot of fat

Reduces the ability of white cells to kill germs

Help Your Immune System!

0Vitamin C-reacts on cancer cells

0Helps stomach, breasts, colorectal and prostate cancers

Examples: citrus fruits, green peppers, cantaloupes, broccoli

0Vitamin E-enhances production of B cells

0Lowers the risk of cardiovascular disease

Examples: grains, vegetable oils, seeds

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Sources Consulted

“Animation: The Immune Response.” Human Anatomy. McGraw-Hill Higher Education, 2006. Web. 1 Mar.

2012. <

http://highered.mcgraw-hill.com/ sites/ 0072495855/ student_view0/ chapter24/ animation__the_immune_respons

e.html

>.

“8 Foods That Boost Immunity.” Ask DrSears. AskDrSpears.com, 2011. Web. 28 Feb. 2012. <

http://www.askdrsears.com/ topics/ family-nutrition/ foods-boost-immunity/ 8-foods-boost-immunity>.

“4 Habits That Weaken the Immune System.” Ask DrSears. AskDrSears.com, 2011. Web. 1 Mar. 2012.

<http://www.askdrsears.com/ topics/ family-nutrition/ foods-boost-immunity/ 4-habits-weaken-immune-system>.

“How Your Immune System Works.” How Stuff Works. How Stuff Works, Inc, 2012. Web. 1 Mar. 2012.

<http://science.howstuffworks.com/ environmental/ life/ human-biology/ immune-system.htm>.

“Immune System.” KidsHealth. The Nemours Foundation, 2012. Web. 28 Feb. 2012. <http://kidshealth.org/

parent/ general/ body_basics/ immune.html>.

“Ways to Strengthen the Immune System.” Essortment. Demand Media, 2011. Web. 1 Mar. 2012.

<http://www.essortment.com/ ways-strengthen-immune-system-62358.html>.