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Lung disordersAdvanced Biology
StemCellsFormingAnArtificiallung
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Asthma
O Chronic airway inflammationO Airway obstructionO Hypersensitivity to a variety of stimuliO Symptoms: difficult breathing, wheezing, chest
tightness, anxiety
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COPD: chronic obstructive pulmonary disease
O Chronic obstruction of airflow.
O Emphysema and chronic bronchitis.
O Cause: exposure to cigarettes or 2nd hand smoke
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Lung cancerChronic cough, blood in sputum, wheezing, chest pain85% cases are due to smoking.Usually diagnosed in advanced stages, patients die within one year.
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Lung cancerTypes of Lung CancerThere are two main types of lung cancer, distinguished by the appearance of the cancer cells under a microscope. Small-cell lung cancer is the more aggressive of the two, meaning it can spread quickly to other parts of the body early in the disease. It is strongly tied to cigarette use and rarely seen in nonsmokers. Non-small-cell lung cancer grows more slowly and is more common, accounting for almost 90% of all lung cancers.Web MD
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Small and non-small cancer
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PneumoniaO Acute infection or
inflammation of the alveoli.
O Alveoli fill with debris and fluid, interferring with ventilation and gas exchange
O Cause: Streptococcus pneumoniae bacteria
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TuberculosisO Highly infectious
communicable lung disease
O Bacteria may spread from the lungs to other organs
O Fatigue, wt. loss, coughing blood, night sweats
There are now strains of TB that areMulti-drug resistant
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Pulmonary edemaO Abnormal
accumulation of fluid in the interstitial spaces and alveoli.
O Can be caused by heart failure or “leaking” capillaries
O Painful, labored breathing
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Pulmonary edema
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H1N1 influenzaO Virus spreads from
person to personO Fever, cough, runny
nose, body aches, headache, fatigue
O To prevent infection:O Get a flu shotO Wash handsO Cover your cough