Discuss how the body fights off germs by Zhou Shiyuan Wendy
Humans are always fighting with germs. Currently, with COVID-19 increasing at high levels, many people have become alarmed about germs and viruses. Some people claim they believe that the human body can keep out all the germs and protect our body very well, while others argue that the human body is not impenetrable. In fact, the human body can help us a lot in keeping away germs; many organs in the human body play an important role in keeping germs away, such as skin, stomach, and mucous membranes.
To start with, the first line of defense against germs in the human body is the skin. The skin could resist germs by keeping out the germs and not letting them germs get into the human body. The fundamental reason for this is that the tissue structure of the skin has many layers, the spacing between cells is minimal, and there are various human immune factors in the middle of the spacing gap playing a protective role, so it can resist germs (Infographic: How The Body Fights Off Germs). Nevertheless, the skin is not impenetrable; pathogens work their way to get through wounds or openings on the skin, such as the nose and mouth. For example, a wound is more susceptible to bacterial infection than normal skin. Therefore, protecting our skin is very important.
Moreover, another organ that helps us defend the germs we should discuss is the stomach. The stomach walls will secrete a kind of acid that is very significant for digestion. If germs are in the human stomach or caught up to the stomach in mucus, the acids will kill most of the germs (Infographic: How The Body Fights Off Germs). However, acids cannot kill all germs. This is due to the fact that some germs and viruses are not sensitive to acids, the COVID-19 is an example of viruses that is not sensitive to acids.
Another organ that should be considered in helping the human body fight against germs is the mucous membranes. They will make up a wall between the surface of the human body and the inside of the human body. Take mucous membranes in the nose, for example; they will not let germs or dangerous microorganisms touch the nasal cavity, which highly protects people from getting sick. Plus, mucous membranes produce sticky mucus that could trap germs that might get into the human body. This point can also be illustrated by the example of nose mucous membranes; they trap the germs by producing sticky nasal mucous, so people can avoid germs by cleaning their noses (Infographic: How The Body Fights Off Germs). Thus, the mucous membranes play vital roles against the germs. In a nutshell, the organs such as the skin, stomach, and mucous membranes in the human body play an important role in keeping germs away; they can help us a lot in keeping away germs. Even though our body can not keep all of the germs away, it relentlessly fights off the dangerous microorganisms for us. Therefore, people should be careful of viruses and germs because our body is not impenetrable, also, do more exercise and get all kinds of vitamins to keep our body strong and healthy.