Scientific Writing Essay Example | Topics and Well Written Essays - 500 words

Scientific Writing - Essay Example Innate immunity comprises mainly of the skin and mucosal surfaces. The main function of this immune is to prevent entry of specific non-self antigens. In many cases, compromising of innate immunity occurs and consequently pathogens gain entry into the body. The remedy then is the acquired immunity, which comprise the cellular immunity, (lymphocytes, macrophages, natural killer cells, and antigen-presenting cell) and humoral immunity (mediated by macromolecules). It works by recognizing disease causing pathogens and triggering mechanisms that destroy them. (Weinstein 40) Many diseases that kill people in this century originate from stress as opposed to improper diet, and pathogen resistance to drugs. More investment on in making people less stressed than in pharmaceutical firms it to be considered by any nation that want healthy and effective citizens. An immune system in its right condition is able to keep pathogens at bay and maintain the body health. Stress remarkably interferes the immune system by altering its functioning. It suppresses the immune system function and over time causes tearing down of this important system. Stress is the feeling of inability to deal with a life-threatening situation. It leads to emotional, psychological, and physical problems. The physical problems include heart disease, high blood pressure, chest diseases, and heart rate abnormalities (Harrington 26). The adrenal glands release adrenaline when someone is under stressful conditions. It responds well to short term stress through fight or flight response. Adrenaline stimulates the heart rate, contracting blood vessels’ dilating air passages thus increasing a subsequent flow of blood to the muscles and the amount of oxygen intake in the lungs (Weinstein 43). These responses affect the digestive system by inhibiting the digestion. If stress is prolonged, the production of