Wednesday, October 20, 2010
smoker's cough
Smoker's cough is a kind of cough seen especially in smokers. Any irritant present in the respiratory system may trigger cough; however, smoker's cough develops as a consequence of phlegm buildup in the trachea.
CAUSE
-In the trachea, the walls are lined with cilia, small hair-like projections that protrude from the tracheal epithelium. They move in a synchronous wavelike motion, thereby moving foreign bodies trapped in phlegm upwards towards the oropharynx, so they may be swallowed. Cigarette smoke disables or paralyzes these cilia, so the only way that phlegm can be removed is via coughing.
Some smokers can get a more persistent cough over time. This cough can bring up phlegm which can be become close to green in color and can start building up as soon as the weather changes or when body exposed to the cold.
CAUSE
-In the trachea, the walls are lined with cilia, small hair-like projections that protrude from the tracheal epithelium. They move in a synchronous wavelike motion, thereby moving foreign bodies trapped in phlegm upwards towards the oropharynx, so they may be swallowed. Cigarette smoke disables or paralyzes these cilia, so the only way that phlegm can be removed is via coughing.
Some smokers can get a more persistent cough over time. This cough can bring up phlegm which can be become close to green in color and can start building up as soon as the weather changes or when body exposed to the cold.
Tuesday, October 19, 2010
Wednesday, October 6, 2010
please do not smoke: Smokers Lungs
please do not smoke: Smokers Lungs: "examples of smoker lungs......."
Tuesday, October 5, 2010
cigarette
A Cigarette (French "small cigar", from cigare + -ette) is a small roll of finely cut tobacco leaves wrapped in a cylinder of thin paper for smoking. The cigarette is ignited at one end and allowed to smoulder; its smoke is inhaled from the other end, which is held in or to the mouth and in some cases a cigarette holder may be used as well. Most modern manufactured cigarettes are filtered and include reconstituted tobacco and other additives.[1]
The term cigarette, as commonly used, refers to a tobacco cigarette but can apply to similar devices containing other herbs, such as cannabis. A cigarette is distinguished from a cigar by its smaller size, use of processed leaf, and paper wrapping, which is normally white, though other colors are occasionally available. Cigars are typically composed entirely of whole-leaf tobacco.
Rates of cigarette smoking vary widely. While rates of smoking have leveled off or declined in the developed world, they continue to rise in developing nations.[2][3] Nicotine, the primary psychoactive chemical in cigarettes, has been shown to be addictive. Cigarette use by pregnant women has also been shown to cause birth defects, including mental and physical disabilities. Secondhand smoke from cigarettes has been shown to be injurious to bystanders,[4][5][6][7] which has led to legislation that has banned their smoking in many workplaces and public areas.
Cigarettes are the most frequent source of fires in private homes, which has prompted the European Union and the United States to ban cigarettes that are not fire standard compliant by 2011.[8][9]
The term cigarette, as commonly used, refers to a tobacco cigarette but can apply to similar devices containing other herbs, such as cannabis. A cigarette is distinguished from a cigar by its smaller size, use of processed leaf, and paper wrapping, which is normally white, though other colors are occasionally available. Cigars are typically composed entirely of whole-leaf tobacco.
Rates of cigarette smoking vary widely. While rates of smoking have leveled off or declined in the developed world, they continue to rise in developing nations.[2][3] Nicotine, the primary psychoactive chemical in cigarettes, has been shown to be addictive. Cigarette use by pregnant women has also been shown to cause birth defects, including mental and physical disabilities. Secondhand smoke from cigarettes has been shown to be injurious to bystanders,[4][5][6][7] which has led to legislation that has banned their smoking in many workplaces and public areas.
Cigarettes are the most frequent source of fires in private homes, which has prompted the European Union and the United States to ban cigarettes that are not fire standard compliant by 2011.[8][9]
Monday, October 4, 2010
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