What are the parts of the immune system?

Question

What are the parts of the immune system. how do they work? i've tried the internet but my school doesn't let me use google and stuff, so i can't find much info on the immune system. Thanks!

Answer 1

Organs and Cells of the Immune System

* Bone Marrow: All the different cells of the immune system are formed in the bone marrow. Their formation is begun in bone marrow and then they move into the blood stream where their maturation is completed.

* Thymus: This small but important organ produces T-cells. In addition, the thymus actually chooses which T-cells are best suited for the immune system. The remaining ones are eliminated by the body, assuring a healthy, effective immunity.

* Spleen: You can think of the spleen as a filter for the blood. It catches foreign material in the blood and activates different types of immune system cells.

* Lymph Nodes: The lymph nodes filter foreign material from the lymph fluid. Fluid that drains from various tissues in the body collects in the lymph system and passes through the nodes, being filtered as it passes.

* T-Cells: There are two subsets of T-cells: CD4 cells and CD8 cells. CD4 cells secrete factors that activate other white blood cells that participate in the immune response. HIV attacks CD4 cells, damaging the body's ability to initiate the immune response. CD8 cells are important in directly killing tumor cells, viral infected cells and some parasites.

Answer 2

Dont forget there are also still things called books. (in case the other answer was not enough)

Answer 3

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