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Immune/Lymphatic Sys
Structures and functions
| Term | Definition |
|---|---|
| Thymus | The thymus helps in the development of T-cells. T-cells are a type of white blood cell that help fight infections. |
| Spleen | The spleen filters the blood of foreign cells and old red blood cells in need of replacement. A person miss their spleen gets sick much more often than someone with a spleen. |
| Bone Marrow | Bone marrow produces new blood cells, both red and white. The types of cells that make antibodies, B cells, are formed here. |
| Liver | The liver contributes to your immune defense by collecting and eliminating foreign compounds from the large volume of blood that passes through it. |
| Tonsils | Tonsils help to stop germs entering the body through the mouth or nose. They contain blood cells, which help kill germs. |
| Lymph Nodes | Glands in the immune system that work as filters (security guards) to bacteria, viruses, parasites, or foreign material. They play an important role in fighting infections because they hold high numbers of B cell (make antibodies) and T cells (fighters). |
| Mucous Membranes | Preventive barrier of thick protective mucous that stops pathogens and dirt from entering the body and keeps tissues hydrated. |
| Lymphatic Vessels | Tiny, thin-walled vessels that transport fluid from tissues (lymph) to be filtered by the lymph nodes and returns it to the bloodstream. |
| Skin | Acts as a barrier to foreign objects/pathogens/invaders. Protects from various factors (pressure, temperature, chemicals). 1st line of defense. |
Created by:
lcarranza
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