Immune

​**The Immune System **

The Immune System is the part of the body that protects you from infectious diseases, germs, and microorganisms. The immune system attacks organisms and germs that invade body systems and cause disease. The cells involved are the White Blood Cells, which come in two basic types that combine to seek out and destroy disease-causing organisms or substances.

__Maintaining Homeostasis__

The immune system provides the body with immunity by protecting it from the invasion of foreign objects. The immune system is able to recognize alien substances (antigens) and micro-organisms (pathogens) such as bacteria and viruses as ‘non-self’ and responds by creating a defense that prevents the entry into the internal environment of the organism. The immune system also protects against the many cells that have the tendency to transform into cancer cells. This protection against infection and potential cancer cell is how the immune system contributes to homeostasis. In more subtle ways, the immune system also aids in maintaining homeostasis by building molecules that are involved in nutrient transport, receptor regulation and other physiological effects.

​ __ Other Systems that work with the Immune System __

The Cardiovascular System and the Immune System:
Every life form needs Oxygen. First of all, The Respiratory system is connected with the Cardiovascular system where blood gets oxygenated. As well all know, the blood is composed of several cells such as the red blood cells, white blood cells, platelets. The White Blood cells are responsible for immune responses in the body. Without oxygen, all three would not function well and would make the person very ill and prone to infection. ===The Endocrine System and the Immune System: The endocrine system naturally produces Cortisol, which reduces the swelling that the immune system produces. Cortisol is produced by the adrenal glands of the endocrine system. If the body is attacking a disease too aggressively, Cortisol can calm the defenses and prevent the body from harming itself. Adrenaline hormone produced by chromaffin cells can supress the immune system.​ Progesterone also help inhibit in immune system and works along with enkephailn to regulate the feeling of pain and inflammation. ===