The Emmain System: The Functions Of The Immune System

A. The function of the immune system is to protect the body against harmful foreign bodies,diseases, and microorganisms. The immune system identifies these potentially harmful threats from viruses, parasites, and bacteria, and distinguishes them from the bodies healthy tissue. Then the immune system attacks the disease causing organisms, or pathogen.

B. The many organs involved in the immune system are as follows. 1. The Thymus “educates” lymphocytes that leave the bone marrow to become mature T- lymphocytes. 2. The liver synthesizes proteins, and it contains many phagocytic cells. These cells ingest bacteria in the blood as they pass through the liver. 3. Bone marrow is the site of where the cells of the immune system develop from stem cells. 4. Tonsils are the collection of lymphocytes in the throat. Lymphocytes are small white blood cells that respond to foreign invaders in the body. 5.The Lymph

The synovium becomes inflamed and the cartilage and bone within the joint are eventually destroyed. Then the joint loses its alignment when the tendons and ligaments that hold is are weakened and stretched. Type one diabetes is a disease in which the immune system attacks and destroys the insulin-producing cells in the pancreas. Insulin circulates through the body, allowing sugar to enter into cells. When the insulin-producing cells are destroyed, so sugars build up in the blood-stream and this can cause life-threatening complications. Multiple sclerosis, which is most commonly known as MS, is an autoimmune disease. In this case, the immune system destroys the myelin, the fatty substance that covers and protects nerve fibers in the spinal cord and brain. When the nerve fibers are not coated with the myelin, the messages that travel along the nerve can be slowed or even blocked.

E.