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What Does The Immune System Protect The Body Against Brainly

What Does the Immune System Protect the Body Against Brainly Infections?

What does the immune system do to protect the body against brainly infections? Antigens, proteins that bacteria and fungi have on their surfaces, activate the immune system. Antigens attach to special receptors on immune cells and initiate a chain of processes. The immune system stores information about disease-causing germs to make it easier for the body to recognize them later. Antigens are very important for preventing the development of disease.


Inflammation is one of the biggest causes of chronic diseases, consuming billions of dollars each year in the United States. While it plays an essential role in healing injuries, mops up debris and fends off foreign invaders, inflammation is also the catalyst for a myriad of diseases. Inflammation is a factor in causing arthritis, atherosclerosis, cancer, diabetes and even autism.

The immune system is comprised of white blood cells, proteins and other immune system cells. These cells interact and work together to fight disease and infection. While there are no individual organs that make up the immune system, it is distributed throughout the body. Immune cells travel through blood vessels and lymphatics to fight off infection. The lymphatic system supports the immune system by activating immune cells and clearing out dead cells.

Inflammation is a natural part of the body, and the immune system is a vital part of healthy functioning. When a tissue is injured, the immune system sends out chemicals called antigens. These chemicals cause blood vessels in the affected area to leak fluid. This helps isolate the foreign substance. The chemicals also attract white blood cells called phagocytes to the affected area, which “eat” germs and other harmful substances. The end result of this process is pus, which is made of dead bacteria, tissue, and phagocytes.


T-cells are also known as T lymphocytes or CD3 cells. They attack infected cells and regulate immune response. Despite their diverse roles, T-cells protect the body against many infections. The killer T-cell is the most common type of T cell. It protects the body from bacteria and viruses. Killer T-cells can recognize and destroy virtually any antigen, but their functions differ. Some T-cells are “killer” or “cytotoxic”, while others can recognize and attack infected cells directly.

T-cells are formed from hematopoietic stem cell in bone marrow. They finish their development in the Thymus, a specialized immune organ located in the chest. They then differentiate from immature lymphocytes to mature T-lymphocytes. After maturation, T-cells populate the spleen, lymph nodes, and bone marrow.

The immune system’s T-cells protect the body from brain infections. In the early stages of life, innate immune responses are strongest. Although newborn infants inherit antibodies from the mother, they don’t produce their own antibodies for many weeks. Adaptive immune responses are not fully developed at birth, so they have not accrued enough experience to provide optimal memory responses. The formation of memory occurs throughout the lifetime, but the most rapid experience-gain occurs between birth and three years of age. This means that each infectious exposure trains the cells to respond faster to future infections.

Lymphocytes are a component of the immune system. There are two types of lymphocytes: T and B cells. T lymphocytes are direct fighters of foreign invaders. B cells fight invading bacteria and viruses, while T lymphocytes fight invading particles. All these cells work together to defend the body from infection. It is essential to have healthy T cells.


The immune system produces antibodies to fight off foreign invaders. Antibodies recognize an antigen, a small protein found on the surface of foreign organisms. These antigens could be anything from microbes to chemicals and chemicals found in the environment. Antibodies attach to these antigens and trigger other parts of the immune system to fight them off. Once these antibodies recognize a foreign invader, the body develops immunity against that particular disease.

Antibodies are produced in the body by white blood cells. They are produced by white blood cells and they destroy the toxins that bacteria produces. These include tetanus, diphtheria, and scarlet fever. The body also produces antibodies through memory cells that recognize a specific antigen. These memory cells produce the appropriate antibodies very quickly when an infection triggers an antibody. The immune system is protected because the pathogen is eliminated almost immediately.

Different antibodies have different functions. The IgM class is first to respond to infection. IgE antibodies are responsible for allergic reactions. IgM and IgA antibodies both protect the body against infection in different ways. Antibodies can prevent a virus from attaching to a host cell. Additionally, antibodies can activate the classic complement system. Antibodies can also bind to allergens, activate mast cells, and neutralize parasites.

Cell-mediated response

There are several parts to the immune system, including naive and helper T cells as well as killer T cells. Naive T cells circulate in the body’s lymphatic system and become activated when they encounter an antigen-presenting cell. Helper T cells produce signaling proteins called Cytokines, which can either direct the immune system to attack the target cell or activate “killer” T cells to destroy it.

The nature of the pathogen and the cytokines released by cells of the innate immunity system will determine the types of immune responses that the body produces. Both immune responses protect the body against various infections. The two most common types of immune responses are adaptive and innate immunity. Let’s take a closer look at both. And if you’re still not clear, read on to learn more about these two important immune responses.

Adaptive immune response involves the use of antibodies. These molecules are found on foreign objects and trigger immune reactions by binding to their antigens. The immune system also produces other substances in the body known as lymphokines, which inhibit the immune response. Once this happens, adaptive immunity is activated and attacks the disease-causing microorganisms. The bone marrow is where the B cells mature. Adaptive immunity also utilizes the immune system’s memory to attack foreign pathogens.

Another component of the immune system is the T H 1-mediated response. These cells are responsible to inflame. Intact bacteria can be ingested and multiply within macrophages, evading digestion. T H-1 cells can also activate T cells to transform into T H-1 cell and release specific cytokines. This activated macrophage is more capable of killing tumor cells.

Specific immunity

Our immune system has two levels, innate and specific. Innate immunity protects us from foreign matter, such as bacteria and germs, while specific immunity is responsive to specific pathogens. Both systems work together when we are infected by germs or other harmful substances. The body’s innate immune system responds to foreign material when it detects a threat, but specific immunity protects us from disease when it fails to recognize the harmful substance.

The innate immune system responds to pathogens by secreting cytokines. The specific cells that produce these cytokines are responsible for triggering the immune response. This type of immune response also involves memory to protect us from reinfection. By creating a memory of the pathogen, our immune system becomes able to recognize it and respond efficiently. By recognizing and destroying the pathogen, we are able to defeat it and avoid the possibility of developing the disease again.

The innate immune system is inherited and activated as soon as we are born. It is composed of specialized immune cells as well as physical barriers. The body’s innate immune system is quick to react to pathogens, and can cause fever and inflammation. However, it cannot recognize specific strains of bacteria. Therefore, it is unable to protect us against many pathogens. Specific immunity, however, is able to recognize new germs.