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 The respiratory system is a very important system in the human body. Without the respiratory system tissues would die, and none of us would be alive. Some diseases that can affect your respiratory system are lung cancer, asthma, and pneumonia. Lung cancer begins with cellular changes in the bronchial epithelial cells and can invade adjustment tissues before symptoms are even noticed. There is not just one type of lung cancer, there are many, but are categorized differently. Asthma can occur at any age. Young children who have frequent respiratory infections are at a high risk of developing asthma. Asthma causes fluid buildup in the lungs and airways which causes the body to work harder in order to provide oxygen to the body and to release carbon dioxide from the body. Asthma can also cause airway inflammation.    Some of the organs in the respiratory system are the nasal cavity, pharynx, larynx, trachea, bronchial tubes, and lungs. These organs work together to perform the mechanical and unconscious mechanism of respiration. The respiratory system works together with the cardiovascular system to deliver oxygen to all the cells of the body. The process of respiration must be continuous. If the process of respiration is interrupted even just a few minutes it can cause brain damage or even death.    The trachea, also called the windpipe, filters the air that is inhaled. It branches into the bronchi, which are two tubes that carry air into each lung. The bronchial tubes are lined with tiny hairs called cilia. Cilia move back and forth, carrying mucus up and out. Mucus is a sticky fluid, which collects dust, germs and other stuff that has invaded the lungs.  The process of respiration can also be divided in three separate parts which are ventilation, external respiration, and also internal respiration. All three parts do different things. Ventilation is the flow of air between the outside environment and the lungs. Inhalation is the flow of air into the lungs. Lastly, exhalation is the flow of air out of the lungs. Another thing inhalation and exhalation do is that inhalation brings fresh oxygen into the air sacs, while exhalation removes carbon dioxide from the body. A question many people have is how does the respiratory system relate to other systems in the human body. Well the other systems help the respiratory system work at its best. These systems would be the digestive system, skeletal system, circulatory system, muscular system, and the nervous system.In the digestive system food goes down the throat and ends up in the digestive system. Also the digestive system breaks down food into simpler substances that the body can use including proteins. This helps the respiratory system because the lungs need nutrients. The respiratory system helps the digestive system by giving oxygen to the digestive system.The skeletal system is important because it is responsible for protecting the inner body. The skeletal system is like a shield covering the body. The way this system works with the respiratory system because it protects the lungs.The circulatory system is a useful system because it transports the food nutrients and oxygen to the body cells. It helps the respiratory system by transporting nutrients to keep the lungs clean, and healthy. The respiratory system in return allows air to keep the circulatory system going.In the human body there are three types of muscle tissue which are the smooth muscle, skeletal muscle, and the cardiac muscle. The muscular system helps push air out of the respiratory system. The respiratory system has the lungs that deliver air to the muscles.Lastly is the nervous system. The nervous system actually makes you feel what you feel, it controls your bodies’ activities. It helps the respiratory system by allowing you to feel and know when you are breathing. Another interesting thing the nervous system does is that it makes you whine or scream when you get hurt. In concluding, all of these systems function in their own way. They all help the respiratory system in some way. The respiratory system helps all the systems as well. So they all pretty much contribute to each other and help maintain the body function. It is crazy to think how all of these systems are functioning in our bodies.I chose the respiratory system because to me it seemed very interesting. Also I personally felt like it was important because it basically sustains our life. I also learned many new things about the respiratory system. I only really knew the primary stuff, but I didn’t know the information thoroughly. I found it interesting because all of the systems have very important roles in the respiratory system. Also they all have their uniqueness because they all do different things. They all have their importance as well.

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