Immune system

By: Griffin

What is the Immune system?

The immune system is a system that protects you from diseases and infections.

How? By the help of the organs below.



A small organ located just behind the breastbone. This is where your t-cells mature (t-cells; the "t" is for "thymus")

Bone Marrow

The yellow tissue in the center of your bones that make white blood cells that are designed to become lymphocytes

Lymph Nodes

Small, bean shaped structures that produce and store cells that fight disease and infection. When you have an infection your lymph nodes can feel sore and get larger.


The largest lymphatic organ in the body. It helps control the amount of blood in your body. It also contains white blood cells that fight disease and infection.

Big image
Big image

Autoimmune disease

In autoimmune diseases, the body attacks normal, healthy tissues. The cause is unknown. It is probably a combination of a person's genes and something in the environment that triggers those genes.

Three common autoimmune diseases are:

  • Type 1 diabetes. In this type of diabetes, the immune system attacks the cells in the pancreas that make insulin. Insulin removes sugar from the blood to use as energy.

  • Rheumatoid arthritis. This type of arthritis causes deformities of the joints and swelling. An auto-antibody called rheumatoid factor is in the blood of some people with rheumatoid arthritis.

  • Lupus. Systemic lupus Eratosthenes is an autoimmune disease that attacks body tissues, including the kidneys, lungs, and skin. Many types of auto-antibodies are found in the blood of people with lupus.