Organs of the immune system

Tonsils and adenoids are organs to trap microbes entering your body from your food. Thymus is where T cells mature, which are vital to the acquired immune system. The spleen filters blood and lymph, along with storing white blood cells. The appendix is a vestigial organ to aid with digestion of raw meat. Bone marow is where blood and B cells are produced. Lymph nodes are places where lymph is filtered, and memory B cells are housed. 

The types of phagocytic cells, cells that absorbe and destroy bacteria

Neutrophils are the most active and common of white blood cells, which engulf and destroy particles like bacteria within the body. They only live for a few days. Eisonophils are involved in little phagocytic activity. They are built to destroy parasites. Monocytes/macrophages are 5% of the white blood cells, and are very long-lived. They are the biggest of the white blood cells, Dendritic cells are involved in acquired immunity. 

Innate Immunity

Innate immunity is natural/non-specific immunity for your body. Some examples include skin, which protects against most microbes, mucuos membranes, which trap microbes, and various secretions that prevent microbes from having a subtle environment. Some cells that participate in innate immunity are phagocytic cells. Types of phagocytic cells include neutrophils and macrophages. 

Inflammatory Response

The inflammatory response is activated when the skin.  See image below

Humoral Response

The Humoral response in the body's response to bacterial infection. First the antigen is presented to the body. Next the antigen is engulfed by a body cell that displays it. Helper T cells then take a day to get to a lmph node and activates a B cell to produce antibodies. B cells split into plasma cells that produce anitbodies and memory cells to remember how to do so.

Cell-Mediated Immune Response

 The cell-mediated response is to defend against certain cancers and antigen-infected cells.

In the cell-mediated response, an antigen has infected a body cell. 

helper T cells recognize the infected cell, and then decide whether or 

not to stimulate B cells to secrete antibodies. Another option is to 

activate cytotoxic T cells. The T cells then split into memory T cells 

and killer T cells. The killer T cells will destrtoy the antigen-infected 

cell. The memory T cells will remember future antigen exposures. 

Diseases:

A common problem with the immune system is what is called an

autoimmune disease.  Auto immune diseases occur when the immune

system attacks cell part of the body.  An example of this would be

Type 1 Diabetes, which results from the immune system destroying

pancreatic cells that produce insulin.  Another example would be

anemia.  Anemia is a lack of health red blood cells.  Anemia can 

be caused when the immune systems cells attack the cells in 

the lining of the stomach that help with the creation of red blood cells.