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Respiratory - Essay Example

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This essay focuses on such an understanding and focuses on the structure and function of the respiratory system and the associated diseases and diagnosis as well. The respiratory system proves to be one of the essential parts of human bodies since it involved the inhale…
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Extract of sample "Respiratory"

Download file to see previous pages From the essay "Respiratory" it is clear, that the primary role of the respiratory system is to provide oxygen to the body such that the supply of oxygen may be continuous. Also, carbon dioxide from the body is removed through this process, hence making the process and the system all the more important (Davies, Moores & Britton, 2003, pp.2-3). The present study focuses on an understanding of the structure of the respiratory system, the functions of the respiratory system, the factors affecting gas diffusion, the pathological factors reducing diffusion rate, as well as the respiratory diseases. 1. Structure of the Respiratory System: There are two fundamental parts of the respiratory system- one portion conducting air and another exchanging gas. There are several passageways in the air conducting portion thus allowing air to pass through. The exchange of gas is performed by the lungs. The different major parts of the respiratory system include the nasal cavity, the oral cavity, the pharynx, the epiglottis, the larynx, the trachea and bronchi, the bronchioles and the alveoli. The nose and the mouth allow the air to enter the body which is then passed to the pharynx joining to the larynx. The larynx opens up into the trachea which a short duct wide in structure. Cartilage reinforcements occur on the trachea and bronchi and bronchioles are formed from the smallest bronchi, leading the bronchioles towards the alveoli. The first law of definition given by Fick provides the factors that affect the process of gas diffusion. ...
The larynx opens up into the trachea which a short duct wide in structure. Cartilage reinforcements occur on the trachea and bronchi and bronchioles are formed from the smallest bronchi, leading the bronchioles towards the alveoli (Chiras, 2011, pp.152-154). The structure of the respiratory system has been presented in the following illustration: Figure 1: The Structure of Respiratory System (Laurien, 2013). 2. Factors Affecting Gas Diffusion: Exchange of gas within the body is performed by the process of diffusion. The process of gas diffusion may be illustrated through the diagram on the left. Figure 2: Gas Exchange in the Lungs (Respiration, n.d.). The first law of definition given by Fick provides the factors that affect the process of gas diffusion. The factors affect the process of gas diffusion through membranes in the system that is permeable in nature. This is given by the following definition (Rankin, Duggan & Pitcher, 1983, p.41): M = KA ?P/x Where M = amount of gas diffusing per unit time (mmol min-1), K = Krogh’s diffusion constant (nmol s-1 kPa-1), A = area of membrane (mm2), ?P = difference in partial pressure of gas on each side of the membrane (kPa), x = thickness of membrane (µm). It is necessary to mention in this regard that the gas diffusion is normally measured in terms of its amount. However, the “driving force is the difference in partial pressure” (Rankin, Duggan & Pitcher, 1983, p.41). 2.1. Pathological Conditions Affecting Diffusing Capacity: The diffusion capacity for carbon monoxide is calculated by the following formula (Modak, 2008, p.114): Diffusing capacity for carbon monoxide = Carbon monoxide uptake / Alveolar carbon monoxide The normal capacity ...Download file to see next pagesRead More
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At first, I thought 7 of pages is too much for such a subject. But now I see it could not be done better. As the author starts you see the difficulty of the subject. I’ve read all at once. Terrific text


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