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

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

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

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

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

According to Anne Davidson and Betty Diamond, autoimmune diseases are diseases in which your immune system, the system in your body which protects yourself from illnesses, attacks other healthy cells in your body (Davidson and Diamond, 2001). The list of autoimmune diseases includes, but isn’t limited to, Addison’s disease, narcolepsy, and psoriasis; each disease affects the immune system in different ways. Diabetes, also known as Diabetes Mellitus, is an autoimmune disease in which the pancreas

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

textbooks and copious National Geographic books on the human body. I sucked up the information like a sponge, but it still wasn’t enough. My brain ached for answers as to the development of diseases and pathogens, functions of the body, how the immune system fights off viruses and bacteria, and so much more.

Your immune system is your defense against infections organism and other invaders. Your immune system will attack the organism and substances that invade your body systems. The immune system is made up of cells, tissues, and organs that work together to protect your body. One of the most important cells is a white blood cells called the Leukocytes. How does your immune system work? When a foreign substance invades the body it detects many

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

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

Chapter three of Viruses, Plagues, and History is about immunology with specific focus on how the immune system responds to viral infection and the effect of HIV on the immune system. Building upon concepts of virology covered in the previous chapter, I found this chapter to be both interesting and easy to comprehend. Personally, I appreciated the reference to autoimmune diseases when the chapter was discussing how people with autoimmune disease who are treated with immunosuppressive therapy are

the body (skin, joints, and/or organs inside the body). When you have lupus, the body attacks the healthy tissues that’s supposed to fights off viruses, bacteria, and germs. Normally our immune system produces proteins called antibodies that protects the body from these invaders. Autoimmune means your immune system cannot tell the difference between these foreign invaders and your body’s healthy tissues and creates autoantibodies that attack and destroy healthy tissue. These autoantibodies cause inflammation

further transmit the disease. Prevention of a virus can be acquired through naturally acquired active immunity or artificially acquired immunity. Naturally acquired active immunity is where immune system has a chance to destroy the virus particles before they can enter a cell. The virus’ antigens alert the immune system to produce white blood cells to prevent the virus from spreading. White blood cells are the type of cells that are used to ward off any foreign pathogens in the body. The two white blood

flesh eating bacterial infection is a rapidly progressing fleshing eating disease which destroy muscle, fat and skin tissue. Flesh eating bacteria release toxin and destroy the surrounded tissue. This infection occurs in people with compromised immune system. The bacterias that caused this infection are Streptococcus pyogenes, Staphylococcus aureus, Vibrio vulnificus, Clostridium perfringens, Bacteroides fragilis, Aeromonas hydrophila. The infection usually begins locally by a trauma that allows the

and chickenpox can be prevented by vaccines (Nordqvist. C, 2017). Taking a good care on the basic hygiene such as frequent and thorough hand-washing also helps protect from most infectious diseases. There are two levels of immunity in the human immune system which is the specific and nonspecific immunity. To defend the foreign materials that perceived to be harmful, the human body protects itself though the