The immune system includes special cells, organs, and chemicals to fight infections. A few of the primary areas of the immune system include antibodies, bone marrow, the lymphatic system, white blood cells, the thymus, and the spleen. These different areas of your immune system play a key role in fighting various types of infections.
One of the main functions of the immune system is to keep a record of each microbe it has ever eliminated in white blood cells, which are also known as memory cells. These cells make it possible for the immune system to identify and quickly eliminate the microbe if it enters the body again, which helps to prevent you from feeling sick.
Here are a few of the different immune system responses:
Humoral Immune Response
The humoral immune response happens whenever a foreign material is detected in the body. Often, this foreign material can include bacteria. The primary mechanism by the humoral immune response occurs through B cell lymphocytes that produce antibodies once a specific antigen is detected in the body. These B cells circulate within the body through the lymphatic system. Lymphocytes include a variety of antigen-specific molecules, which are critical for detecting infectious agents in the body.
Innate Immune Response
The innate immune response is the initial defense against any invading pathogens. This response consists of chemical, cellular, and physical defenses against non-self pathogens. One of the primary purposes of the innate immune response is to quickly prevent any foreign pathogens from spreading within the body.
Adaptive Immune Response
The adaptive immune response is the secondary line of defense against invading pathogens. Adaptive immunity is specific to the presented pathogen, as it's designed to attack non-self pathogens, but it can make mistakes and attack itself. Autoimmune diseases can occur once this happens, such as rheumatoid arthritis or lupus. The main impact of the adaptive immune response is long-term, highly specialized, and supported by memory T cells.
Primary Immune Response
The primary immune response happens once it encounters a toxin or foreign substance. Typically, the primary immune response can last up to two weeks to complete the process, as it has to learn how to identify the antigen and build up antibodies. The primary immune response is also responsible for producing memory lymphocytes, which play a key role in protecting your body if exposed to the same antigen again.
Secondary Immune Response
The secondary immune response occurs once a person is exposed to the same antigen, whether it's the second, third, or fourth time, etc. The immunological memory has already been established at this point, which allows your body to begin producing antibodies to eliminate these toxins immediately. The secondary immune response is much stronger than the primary immune response, and the antibody often remains at a high level for a longer time.
Cell-Mediated Immune Response
The cell-mediated immune response is the primary way a host fights against invasive viruses and bacteria that can eventually lead to intracellular infections. The cell-mediated immune response also plays a key role in fighting and eliminating cancer cells within the body. Additionally, the cell-mediated immune response is also involved in the rejection of graft tissue or organ transplants.
Non-Specific Immune Response
The non-specific immune response uses plasma proteins and white blood cells to fight against pathogen infections. Non-specific immunity consists of phagocytes and barriers, and it's the immune system with which you were born. A few examples of the non-specific immune response include protein defenses, inflammation, cellular defenses, physical barriers, and fever. While only vertebrates have a specific immune response, all animals have some form of non-specific immune response.
Specific Immune Response
Antigens always trigger the specific immune response. These antigens are often located on the exterior of pathogens, as they are also unique to that particular pathogen. A specific immune response is uniquely tailored to combat specific types of invaders. The specific immune response plays a vital role in fighting against specific germs that have previously been in contact with the body.
Understanding the various types of immune responses is important in learning how your body fights against toxins and pathogens. The immune system is a complex and interconnected system that fights against bacteria and viruses to help you live a healthy life. All of the different immune system responses are critical to your health, whether it's the humoral, innate, adaptive, primary, or secondary immune response. The cell-mediated, non-specific, and specific immune response also plays a big role in fighting against toxins in your body.
You can also improve your immune system in a variety of ways, such as eating fruits and vegetables, exercising regularly, getting enough sleep, not smoking, limiting your alcohol intake, and maintaining a healthy weight.