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Lung Disease PowerPoint Presentation

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Lung Disease Presentation Transcript

Slide 1 - Three main types of lung disease Airway diseases -- These diseases affect the tubes (airways) that carry oxygen and other gases into and out of the lungs. These diseases cause a narrowing or blockage of the airways. They include asthma, emphysema, and chronic bronchitis. People with airway diseases sometimes describe the feeling as "trying to breathe out through a straw." Lung tissue diseases -- These diseases affect the structure of the lung tissue. Scarring or inflammation of the tissue makes the lungs unable to expand fully ("restrictive lung disease"). It also makes the lungs less capable of taking up oxygen (oxygenation) and releasing carbon dioxide. Pulmonary fibrosis and sarcoidosis are examples of lung tissue diseases. People sometimes describe the feeling as "wearing a too-tight sweater or vest" that won't allow them to take a deep breath. Pulmonary circulation diseases -- These diseases affect the blood vessels in the lungs. They are caused by clotting, scarring, or inflammation of the blood vessels. They affect the ability of the lungs to take up oxygen and to release carbon dioxide. These diseases may also affect heart function.
Slide 2 - The most common lung diseases include: Asthma Chronic bronchitis COPD (chronic obstructive pulmonary disease) Emphysema Pulmonary fibrosis
Slide 3 - Asthma is an inflammatory disorder of the airways, which causes attacks of wheezing, shortness of breath, chest tightness, and coughing. Asthma is caused by inflammation in the airways. When an asthma attack occurs, the muscles surrounding the airways become tight and the lining of the air passages swell. This reduces the amount of air that can pass by, and can lead to wheezing sounds. Most people with asthma have wheezing attacks separated by symptom-free periods. Some patients have long-term shortness of breath with episodes of increased shortness of breath. In others, a cough may be the main symptom. Asthma attacks can last minutes to days and can become dangerous if the airflow becomes severely restricted. In sensitive individuals, asthma symptoms can be triggered by breathing in allergy-causing substances (called allergens or triggers).
Slide 4 - Common asthma triggers include: Animals (pet hair or dander) Dust Changes in weather (most often cold weather) Chemicals in the air or in food Exercise Mold Pollen Respiratory infections, such as the common cold Strong emotions (stress) Tobacco smoke Emergency symptoms: Bluish color to the lips and face Decreased level of alertness such as severe drowsiness or confusion, during an asthma attack Extreme difficulty breathing Rapid pulse Severe anxiety due to shortness of breath Sweating
Slide 5 - CF Cystic fibrosis is an inherited disease of the mucus and sweat glands. It affects mostly your lungs, pancreas, liver, intestines, sinuses and sex organs. CF causes your mucus to be thick and sticky. The mucus clogs the lungs, causing breathing problems and making it easy for bacteria to grow. This can lead to problems such as repeated lung infections and lung damage.
Slide 6 - The symptoms and severity of CF vary widely. Some people have serious problems from birth. Others have a milder version of the disease that doesn't show up until they are teens or young adults. Although there is no cure for CF, treatments have improved greatly in recent years. Until the 1980s, most deaths from CF occurred in children and teenagers. Today, with improved treatments, people with CF live, on average, to be more than 35 years old.
Slide 7 - Rate of diffusion – 3 properties of gas exchange surface Surface area – rate of diffusion is directly proportional. Concentration gradient- rate of diffusion is directly proportional to the difference in concentration across the GE surface. Thickness of the GE surface- rate of diffusion is inversely proportional to the thickness of the GE surface. Thicker surface, slower the diffusion.
Slide 8 - Fick’s Law Rate of diffusion ά surface area x difference in concentration _______________________________ thickness of the gas exchange surface Features to allow for rapid diffusion across the GE surface: Surface area of the alveoli Steep concentration gradient Thin walls
Slide 9 - How sticky mucus affects gas exchange Objective – CF caused by the expression of a gene mutation that impairs the functioning of the gas exchange, reproductive and digestive system. (CFTR the gene associated with CF – cystic fibrosis transmembrane conductance regulator) Genes are proteins
Slide 10 - Why is CF mucus so sticky? Mucus layer on the epithelial cells contain less water Due to abnormal salt and water transport across the cell surface membrane caused by a faulty transport protein channel in the membrane. Protein structure, function, structure of the cell membrane, transport of substances, how proteins are made and the protein channel is what we will study next.
Slide 11 - This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com Is home to well over a thousand powerpoints submitted by teachers. This a free site. Please visit and I hope it will help in your teaching
 

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