Immune System Facts

Your body’s immune system is made up of different cells that protect you from invading microorganism and germs. In your daily day-to-day activities,  you’re  openly exposed to harmful pathogens that could cause certain illnesses, but fortunately —- your immune system protects you.  A problem in the immune system will cause  your body to become prone to bacteria and viruses and eventually lead to certain diseases and infection.

The immune system is as important as any other system in the body, without it you will  be venerable to illnesses and diseases. The steps involved in the series of eliminating pathogens out of the body is known as the immune response. In such event, the immune system releases substances and chemicals to fight off the invading organisms that might cause you to get sick. (Photo: credit National Cancer Institute)


Immune System Function

Your immune system is comprised of different cells, tissues, and organs that work in tandem with each other to eliminate the pathogens inside you. The cells that are directly involved in the process of immune response are the white blood cells,  also known as leukocytes. These white blood cells are subdivided further into two major types: the B-cells and the T-cells which will be discussed further as we go along.

Leukocytes are created and stored in different parts of your body. The spleen, thymus, and bone marrow produces these lymphocytes while the lymphoid organs, made out of lymph nodes and lymphoid tissues, hold these leukocytes in place until they are needed.

The immune system works in conjunction with your other body systems.  During infection, your body’s circulatory system dilates or widens your blood vessels to provide a channel for faster immunological response.  The neurological system also increases your temperature to fight off the pathogens.

There are two types of leukocytes present in your system: the phagocytes and the lymphocytes. The phagocytes work by engulfing the invading microorganism and ingesting them so they become harmless. Neutrophils are the most common type of phagocytes although there are other specific phagocytes stationed intelligently at different parts of the body.

The second type of leukocytes is the lymphocytes. These white blood cells help the immune system recognize and remember the invading pathogens to prepare the body from future attacks. Lymphocytes are classified into two types: The B-Lymphocytes and the T-Lymphocytes.

The B-Lymphocytes are produced in the bone marrow and their main function is to alert the body of a new or upcoming invasion. Ina real life setting, they can be related to the CIA’s intelligence system that seeks out and targets specific groups or individuals. On the other hand, the T-Lymphocytes from the thymus gland, work like soldiers, they search and destroy the B-cell’s identified pathogen.

In review, your immune system protects you against many types of invaders and is composed of different cells, tissue, and organs that work together to initiate an effective immune response. A weak immune system predisposes you to illnesses and diseases. The primary cells involved in the immune response are the white blood cells or also know as the leukocytes and they are divided into phagocytes and lymphocytes. The phagocytes engulf harmful cells while the lymphocytes annihilate microorganisms and remember them for future attacks.