The Effects Of Immune System On The Body

The immune system depends on the body’s structures to help it function. For instance, the skin acts as the “body’s first line of defense.” If a pathogen finds a breach in the skin barrier, it is the circulatory system that must now signal the immune system of the invader. Shortly after, white blood cells will be notified of the infection and will target and destroy the pathogen.

The body’s protection against viruses, bacteria and other types of invasions is our immune system (Tortora, 2014).

Human beings are born with immunity as well as they acquire it from the environment they grow in. Human innate immunity is assigned the task to hinder the harmful substances from entering the body. These immunity barriers develop a defense line. The innate immunity includes cough, tear enzymes, mucus, skin and the stomach acid. Hence, the role of innate immune system is to stop harmful materials from entering our body. In case the innate immunity is insufficient to fight, there is acquired immunity that fights harmful substances by getting exposed to various antigens. The acquired immunity is developed against specific antigen. Its role is to fight

The human immune system creates a series of responses in the body to defend the body. If a foreign organism, such as a virus or a cold invades your body, it recognizes these foreign organisms, and, in turn, attacks them to get rid of them. One can think of the immune system as an army of many cells which have set up their own bastion in the human body. They have only one job: To defend. The immune system’s cells are various kinds of white blood cells. The human body typically creates about 1000 million white blood cells on a daily basis. A group of these cells, macrophages, establish a patrol of sorts throughout the body killing germs as soon as they enter the body. However, sometimes an infection can cause the macrophages to succumb to it. The body begins to fight back with stronger T- and B-cells.

The organs that make up the lymphatic and immune system are the tonsils, spleen, thymus gland, lymph nodes, and lymphatic vessels. White blood cells (leukocytes), red blood cells (erythrocytes), plasma, and platelets (thrombocytes) make up the blood. Lymphocytes are leukocytes (white blood cells) that help the body fight off diseases. Two types of lymphocytes are B cells and T cells. Lymphocytes recognize antigens, or foreign substances/matter, in the body. Lymphocytes are a classification of agranulocytes, or cells (-cytes) without (a-) granules (granul/o) in the cytoplasm. B cells are created from stem cells, which are located in the bone marrow. B cells respond to antigens by becoming plasma cells. These plasma cells then create antibodies. Memory B cells produce a stronger response with the next exposure to the antigen. B cells fight off infection and bacteria while T cells defend against viruses and cancer cells. A hormone created by the thymus gland called thymosin changes lymphocytes into T cells. The thymus gland is active when you are a child and slowly shrinks, as you get older. T cells bind to the antigens on the cells and directly attack them. T cells secrete lymphokines that increase T cell production and directly kill cells with antigens. There are three types of T cells: cytotoxic T cells, helper T cells, and memory T cells.

The immune system is an important and complex part of the human body, guarding it against bacteria

The unable to be harmed response on a person's body is how the body recognizes foreign bacteria, viruses and substances that may appear harmful to the body and defends itself by responding to the germs that the body tries to fight these have. The way it recognizes this germs that the body tries to fight is by already recognizing the proteins that have germs that the body tries to fight that already exist in the body that are not harmful. When the unable to be harmed response

The human immune system is a complex network of cells and organs that evolved to fight off infectious microbes. Much of the immune system’s work is carried

Humans such as us alike cannot live in a world without a highly effective defense system that helps us to resist against infections and toxins caused by microorganisms. The immune system is a complex network of consorting cells, tissues and organs that defend the body from pathogens and other harmful substances. This essential complex consists of two subsections : the innate immune system and the adaptive immune system.

When certain germs enter the body, the human immune system recognizes these germs as foreign substances and then proceeds to produce antibodies

Background: Innate immunity is the first line defense against invading microbes pathogens. Human blood is full of cells that express immune system such as Neutrophils. The most important operation that Neutrophils do in this lab is phagocytosis. Phagocytosis is normal reaction white blood cells doing when human body is under attack from bacterial pathogens.

Our immune system protects the body from dangerous substances by recognizing and responding to antigens. Antigens are substances that are present on the surface of cells, fungi, bacteria, or viruses. Toxins, chemicals, drugs, and foreign particles such as a splinter can also be antigens. The immune system will recognize and destroys, or tries to destroy, substances that contain antigens.

The immune system is a defence mechanism inbuilt in all living organisms comprised of specific biological processes and structures. Its purpose is to protect against disease using the networks of cells, tissues and organs that work cohesively for protection. In order to function correctly, the immune system must be able to detect and distinguish an expansive variety of pathogens that derive from harmful viruses, bacteria, protozoans, parasites etc. The immune system can be divided into subsystems including the adaptive immune system and the innate immune system, as well as act as part of a whole of the organisms’ body,

Have you ever wondered how your body works? Did you ever think about how your body defends itself from outside invaders? Remember the last time you were sick. Did you know how your body fought and killed the sickness? All these questions can be answered by learning about one of the most important systems in your body, the immune system.

Our immune system is the second most complex system in our body. It is made up of organs, cells and proteins that work together to protect our bodies from harmful bacteria, viruses or other microorganisms that can cause diseases. Usually we don’t notice our immune system defending us against pathogens, but if the pathogen (harmful microorganism) is aggressive or if our body hasn’t ever come into contact with it, we can get sick. The jobs of our immune system are to recognise pathogens, as well as neutralise and remove them from our body. Our immune system also has to fight our own cells if they have changed due to an illness, for example, cancer. (1)