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Supply of oxygen and increasing the amount of carbon

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supply of oxygen and increasing the amount of carbon dioxide.In Industrialized countries& high in low income areas.Hay Fever isseasonal allergic reaction to foreign bodies—including pollens, dust, andother airborne allergens—that enter the lungs.oHay fever produceshistamines-cause the capillaries of the lungs to becomeinfl amed and to release large amounts of fl uid. Th e result is violent sneezingamong other symptoms.Viral Infections, Ie common cold - viral infection of the upper and sometimes the lowerrespiratory tract.oThese occur because the primary viral infection causesinfl ammation of themucous membranes, reducing their ability to prevent secondary infection.oBronchitis is an infl ammation of the mucosal membraneinside the bronchi ofthe lungs.Large amounts of mucus are produced in bronchitis, leading topersistent coughing.oInfluenza:EPIDEMIC.Flu viruses attack the lining of the respiratory tract, killinghealthy cells. Fever and infl ammation of the respiratory tract may result.COMMON:.
Bacterial Infections/disorders:including strep throat, whooping cough, and diphtheria.Usually, these disordersdo not cause permanent damage to the upper respiratorytract.oThe main dangersecondary bacterial infection, such as pneumoniacan causepermanent damage to other tissues, including heart tissue.Chronic Obstructive Pulmonary Disease(COPD),including chronic bronchitis andemphysema,ois the fourth-leading killer of people in the United States. COPD is much morecommon and nearly as deadly as cancer(oCOPD is not curable, it is preventable.oIts chief cause is smokingPneumoniaTh ere are two main types of pneumonia.oLobar pneumonia is a primary infection of the entire lobe of a lung. Th e alveolibecome infl amed, and the normal oxygen–carbon dioxide exchange betweenthe blood and alveoli can be disrupted. Spread of infection to other organs isalso likely.oBronchial pneumonia, which is confined to the bronchi, is typically a secondaryinfection (sever cold/flu). It is not as serious as lobar pneumonia.Tuberculosis and PleurisyoTuberculosis is an infectious disease caused by bacteria that invade lung tissue.Tubercle: A clump formedWhen the invading bacilli are surrounded bymacrophages (white blood cells of a particular type),process called caseation,the center of the tubercle turns into acheesy mass, which canproduce cavities in the lung. Suchcavities, in turn, can give rise to permanent scar tissue, causingchronic diffi culties in oxygen and carbon dioxide exchangebetween the blood and the alveoli.Pleurisy is an infl ammation of the pleura, the membrane thatsurrounds the organs in the thoracic cavity.Lung Canceris a disease of uncontrolled cell growth in tissues of the lung.oProduces tumors by cells dividing in a rapid and unrestricted manner,ometastasis, growth leads to the invasion of adjacent tissue and infi ltrationbeyond the lungs.- The most common symptoms areshortness of breath,coughing (including coughing up blood), and weight loss. Smoking is one of theprimary causes.Digestive System

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