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Lung Essay Topics & Paper Examples

Breathe Easy

With both a gill and a lung, apple snails are able to breathe both in and out of water. Perhaps because they carry their houses on their backs, apple snails are not exactly picky about their habitats. Most species live in stagnant, swampy waters that are rich in rotting plants and decaying organisms but poor in oxygen. In addition to the low oxygen levels, apple snails in these tropical habitats often have to contend with seasonal droughts. To cope with these conditions, they have evolved a lung that enables them to draw oxygen directly from the air. During this evolutionary process, apple snails never lost their gill – an advantage that enables them to make fewer trips to the surface,…

Spirometry and Physical Fitness Test

Introduction:Spirometry is the classic pulmonary function test, which measures the volume of air inspired or expired as a function of time. It can monitor quiet breathing and thereby measure tidal volume, and also trace deep inspirations and expirations to give information about vital capacity. Spirometrymay also be used to measure forced expiration rates and volumes and to compute FEV1/FVC ratios. Spirometry provides an objective measurement of lung function. It will measure the Expiratory Vital Capacity (EVC): The maximum volume of gas which can be expired from the lungs during a relaxed expiration from a position of full inspiration. It will also measure the Inspiratory Vital Capacity (IVC): The maximum volume of gas which can be inspired into the lungs during…

Chronic obstructive pulmonary disease (COPD)

Chronic obstructive pulmonary disease (COPD) is a progressive, non-reversible disease that makes breathing difficult. COPD is characterized by coughing, often productive; wheezing; shortness of breath; and chest tightness. The leading cause of COPD is cigarette smoking (National Institutes of Health, 2013). While 85 % of COPD patients are or were smokers, only 10-25 percent of smokers develop COPD, suggesting that a genetic predisposition may also be a factor (Warren, 2012). COPD is the third leading cause of death and major cause of disability in the United States (National Institutes of Health, 2013). Pathophysiology of COPD Two primary disease processes that contribute to COPD are emphysema and chronic bronchitis. The main difference between emphysema and chronic bronchitis is that in emphysema…

Human Body: Health & Disease – Pneumonia

Pneumonia is a serious infection or inflammation of your lungs. The air sacs in the lungs fill with pus and other liquid. Oxygen has trouble reaching you blood. If there is too little oxygen in your blood, your body cells can’t work properly. Because of this and spreading infection through the body pneumonia can cause death. Until 1936, pneumonia was the No. 1 cause of death in the United States. Since then, the use of antibiotics brought it under control. In 1997, pneumonia and influenza combined ranked as the sixth leading cause of death. Pneumonia affects your lungs in two ways. Lobar pneumonia affects a section (lobe) of a lung. Bronchial pneumonia (or bronchopneumonia) affects patches throughout both lungs. Pneumonia…

“Tobacco Use”

“ED sees critical capacities” Emergency Department (ED) crowding is a public health crisis associated with negative patient outcomes including increased mortality and complication rates. Decreased quality in delivery of care is affected by lack of resources to support the increased use of emergency services and is a factor that leads to delays in treatment and untimely interventions. According to the article, Dr. Gordon, an emergency medicine physician and director of the Neighborhood Hospital ED states one of issues within the community is a lack of resources including “adequate medical facilities, especially for low-income individuals or indigents” (“ED sees critical capacities”, The Neighborhood). This problem is widespread throughout the United States and is not limited to the indigent population. Although it…

Respiratory System Mechanics

1.) When you forcefully exhale your entire expiratory reserve volume, any air remaining in your lungs is called the residual volume (RV). Why is it impossible to further exhale the RV (that is, where is this air volume trapped, and why is it trapped?) This “dead space” of air needs to stay in your lungs constantly; otherwise the lung will completely deflate. If the lung has every bit of air sucked out of it, it will collapse and need to be re-inflated. 2.) How do you measure a person’s RV in a laboratory? By the air remaining in the lung 3.) Draw a spirogram that depicts a person’s volumes and capacities before and during a significant cough. Additional Questions for…