Organs Of the Immune System

(http://rex.nci.nih.gov/PATIENTS/INFO_TEACHER/bookshelf/NIH_immune/html/imm04.html)

--- Organs of the immune system are stationed throughout the body. They are known as Lymphoid organs. They are concerned with the growth of Lymphocytes.

* Tonsils and Adenoids: contain clusters of lymphoid tissue

* Thymus

* Lymph Nodes

* Spleen: Provides a meeting ground for immune defenses.

* Appendix: contain clusters of lymphoid tissue

* Lymphatic Vessels

* Bone Marrow: Cells of the immune syetem are produced here

* Peyer's Patches (tissue in the small intestine): contain clusters of lymphoid tissue

---- All these organs are connected together and with other organs of the body by a network of lymphatic vessels.

Lymph Node

Each lymph Node contains compartments that hold B-cells, T-cells and other cells capable of presenting antigens to T-cells. The role of the lymph node is to bring together all the components needed to spark an immune response. They patrol everywhere for invaders.

(Concise Encyclopedia of the Human body)

(Focus on the Human Body)

Lymph fluid flows slowly through the nodes. This is where cells are added, broken down, and recycled according to the body's needs. The thing that is most important to know is that this is where many white blood cells are stored and multiply so that they are ready to go into battle.

Aids ~ Cells that make up our immune system ~ immune system ~ Lymphatic System ~ Interactions in an immune response ~ VACCINATIONS ~ what makes us ill ?