Immune system Essays

The immune system is the most important system in the human body because it protects the body from strange objects, such as viruses, bacterium, and germs. Unfortunately, sometimes the immune system becomes overactive and attacks different areas of the body, such as the lungs, joints, heart, blood, skin, kidney, or brain, which are a healthy area in the body. This overactive of the immune system can lead to many diseases, known as autoimmune diseases. These autoimmune include many diseases, such as

complexity of the human immune system comprises of specialised cells(leukocytes), proteins (antibodies, lysozymes), tissues (lymphatic vessels), and organs (spleen) working together to fight off pathogens due to constant exposure. The first line of defence is the innate immune system which reacts rapidly to the pathogens. Whilst the adaptive immune system responds slowly to infection and also possesses a high degree of specificity. However, it is the activities of the innate immune system that prompt the

is known as immune system(97). Immune system can be classified broadly in two sub-systems, the innate immune system versus the adaptive immune system, or humoral immunity versus cell mediated immunity. In humans, the blood-brain barrier, blood-cerebrospinal fluid barrier separate peripheral immune system from the neuroimmune system which protects the brain(98). Malfunctioning of immune system can result in autoimmune diseases, inflammatory diseases and cancer. Less active immune system results in

IMMUNE SYSTEM All living organisms are continuously exposed to substances that are capable of causing them harm. Most organisms protect themselves against such substances in more than one way --- with physical barriers, for example, or with chemicals that repel or kill invaders. Animals with backbones, called vertebrates, have these types of general protective mechanisms, but they also have a more advanced protective system called the immune system. The immune system is a complex network of organs

Vaccines and the Circulatory, Lymphatic, and Immune Systems Yekaterina Fedorova Community College of Aurora Vaccines and the Circulatory, Lymphatic, and Immune Systems Homeostasis is the continual process in the body which balances the different body systems to create a favorable internal environment. Three systems in the body, namely, the circulatory (blood), lymphatic, and immune systems work separately to maintain the optimum environment for the body. Vaccines for children have been

a child more than one vaccine at a time can increase the risk of harmful side effects which can overload the child’s immune system. In fact, this is not true. Many parents avoid or delay in giving vaccination routine for their children in order to prevent any harm. More than one vaccine and getting vaccinated can lead to dangerous side effects and it would weaken the immune system is what everyone presume often. The society believes that vaccination is seen as a bad luck but in reality it is seen

Overview of Immune system The human body provides the ideal environment for the microbes such as bacteria, viruses, parasites and fungi to enter the body. Thus, it is the jobs of the immune system to keep them out by protect the body from the harmful substances. Immune system is when the networks of cells and tissues work together to defend the body against the foreign invaders.(Menche,2012 and National Institute Health,2003). According to the Latin word, immune come from the word immunis which

micheal hayag Table of contents Page title Page number Introduction Page # 1 Body system Page # 2-5 5 communicable diseases Page # 6-10 prevention Page # 11-12 Introduction: Immunity is a state of a specific resistance to infection. Specific resistance is directed against a particular type of microorganism and is a one of the most important characteristic of the immunity. The Immune System is a system of biological structures that processes in an organism that protects in diseases

transporting blood around the body by a system known as the circulatory system. This system carries blood around the body from the heart to the organs, tissues and cells of the body. Blood is made up of blood cells, namely erythrocytes, thrombocytes and leucocytes – in an extracellular matrix called plasma, which makes up approximately 55% of the blood. It is essential that blood is transported to the organs and systems of the body in order for these systems to function. The fluid is transported

cells, tissues, or organs from one site to another. The malfunction of an organ system can be corrected with transplantation of an organ (eg, kidney, liver, heart, lung, or pancreas) from a donor. However, the immune system remains the most formidable barrier to transplantation as a routine medical treatment. As the immune system is responsible for the rejection of grafts understanding the mechanisms by which the immune system reject the graft helps in the treatment and development of drugs and ways

Unlike many other forms of treatment that can produce unnecessarily unpleasant side effects (such as with chemotherapy), immunotherapy entails using the patient’s own immune system. This is a far milder means of treatment. It uses natural defences and therefore causes less damage. While it is necessary to remove as much of extractable tumours as possible through surgery, it can then be a possibility to use immunotherapies

a tumor (neoplasm), especially when the immune system is malfunctioning. Tumors can be benign, harmless and easily taken out or malignant. Malignant tumors block tissues and organs from functioning with each other. Once cancer cells become metastasized, they break away from a host tumor. These free-floating

1) Inflammation system. When inflammation release is low, the immune response tends to be weak. This exposes the body to bacterial, fungal and viral infections. On the flip side, massive inflammation response get tragic on your body. With uncontrolled inflammation release, immune response dysregulates due to over work and shuts down. The net effect as a result is rampant inflammation in the body causing:  Autoimmune disorders. E.g., arthritis, autism, cancer, and stroke  Exposure to infections

I feel vaccinations are very important for maintaining health, preventing the spread of whatever is going around, and are for the immune system’s ability to fight it. While maintaining health and the benefit of the immune system are similar, I assure you it will all make sense later. For now I truly wish you take the time to read this. I hope you find it very informative. First, vaccinations are important for maintaining your body’s overall health. The reason for this is that your body is already

Introduction Role of fHbp in the immune evasion of N. meningitidis Tom Lotze Neisseria meningitides or meningococcus is well known for causing severe diseases such as meningitis and septic shock as a result of infection, both of which are highly mortal (Seib et al. 2009). Despite these serious consequences, N. meningitidis is part of the normal flora of the nasopharynx of 40% of adults worldwide, and the infection usually goes by asymptomatically (Schneider et al. 2007; Haralambous et al. 2006)

young people who have weak immune systems and can’t protect themselves. People with weak immune systems are more likely to get serious illnesses, some of these illnesses can cause death. If you get vaccinations you are less likely to get these illnesses but just because you have the vaccine does not mean you will not get sick. The vaccine helps to prevent you from getting sick but it doesn’t take all risk away from you getting sick. When you have a weak immune system you can’t fight off diseases

Prevention is Better than Cure. This analogy is widely used and wholeheartedly followed and believed by most of us. The day we are born our doctor starts to take some preventive measures to make our body immune to what’s waiting for us in the outside world. There are a lot of infections and viruses our body is unable to create immunity against. So, what do we do? How do we fight against (on a biological level) these life-threatening infections and viruses? This is where the word ‘Vaccine’ comes to

to give children the vaccinations, for they will understand when they get older. Vaccinations help people fight diseases, and keep them safe from other future diseases down the road. One article states, "Normally when people are younger their immune systems are stronger than they are when they are older" (Mercadal). Doctors highly recommend people take their vaccinations as a child, so they can fight off other infections that could naturally hurt them more in the future. It also states, "Vaccinations

the increase of nonfunctional hemoglobin. The chemicals in cigarette smoke are an ongoing source of damage to cells throughout the body, and your immune system must continually work to fight off this damage. Eventually, immune system cannot keep up with all the damage caused by the smoke. In fact, new research shows that once weakened, the immune system may not even be able to send out antibodies to kill simple bacteria. Malnutrition can also cause surgical site infection. The T-lymphocyte response

and provides benefits to its host in many ways such as digestion, detoxification, production of nutrients, protection against pathogens and regulation of immune system. Immune system plays important role in maintaining the body healthy health by elimination of pathogens. CD4+ T cells in particular, play key role in the adaptive immune system and located in the lamina propria (LP) of the intestine. Microbiota plays important role in the development of CD4+ T cells. Stimulated naive CD4+ T cells