Respiratory System

Topics: Respiratory system, Vertebrate trachea, Heart Pages: 2 (574 words) Published: February 22, 2013
The respiratory system is an intricate network of organs all working together to insure a constant flow of gases, oxygen and carbon dioxide, to keep the body functioning at rest or during exertion’ (ehow). The respiratory system is made up of the nose, trachea, bronchi, diaphragm and lungs. The aim of this assignment is to look at the structure and functions of the respiratory system and also provide an illustration of the respiratory system.. The lungs are an integral part of the human body, and the oxygen provided by the lungs facilitates life. The human body contains two lungs in the chest, one on the right side of the chest and a slightly smaller lung, to facilitate room for the heart, on the left. Each lung is between 10 and 12 inches long and contains blood vessels that carry carbon dioxide blood in and oxygen blood out to the rest of the body .Bronchial tubes are also present in the lungs which contain over 300million air sacs known as alveoli. The main function of the lungs is to perform gas exchange and to aid in waste removal and regulate in temperature control. Air is breathed in through the nose or mouth or both which travels down the windpipe which is called the trachea which is then branched into the left and right bronchi’s which lead to the lungs. According to the American Heart Association ‘the right bronchus has a shorter much direct, route to the right lung than does the bronchus to the left lung.’ Each of these bronchi’s branches into smaller tubes called bronchioles. This system is referred to as the bronchial tree. At the end of each bronchial are small air sacs called alveoli’s. These are responsible for exchanging carbon dioxide and oxygen. Alveolus is closely situated to blood capillaries. Oxygen and carbon dioxide diffuse across the thin membranes that separate the capillaries from the alveolus, bringing oxygenated blood throughout the body and removing carbon dioxide from the lungs through exhalation. Lungs need to be protected...
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