Warning: Use of undefined constant referer - assumed 'referer' (this will throw an Error in a future version of PHP) in /usr/home/essaywo/public_html/essays on line 102

Warning: Use of undefined constant host - assumed 'host' (this will throw an Error in a future version of PHP) in /usr/home/essaywo/public_html/essays on line 105

Warning: Cannot modify header information - headers already sent by (output started at /usr/home/essaywo/public_html/essays:102) in /usr/home/essaywo/public_html/essays on line 106

Warning: Cannot modify header information - headers already sent by (output started at /usr/home/essaywo/public_html/essays:102) in /usr/home/essaywo/public_html/essays on line 109
Asthma 2 - Term Papers

Asthma 2


Asthma {az'-muh} Asthma is a respiratory disorder marked by breathing difficulty caused by temporary narrowing of the bronchi, the airways branching from the trachea to the lungs. Attacks usually are brought on by allergic reaction to ANTIGENS such as grass and tree pollens, mold spores, fungi, animal dander, and certain foods but may also be caused by chemical irritants in the atmosphere or by infections of the respiratory tract. Susceptibility to an asthma attack is based on hyperactivity of the bronchial muscles, which constrict on exposure to one or another of these agents. Episodes of asthma vary widely in severity and may last from a few minutes to several days. They may begin at any ...

Want to read the rest of this paper?
Join Essayworld today to view this entire essay
and over 50,000 other term papers

patients become chronically narrowed, causing a progressive loss of capacity for physical exertion. The prevalence of asthma is only about 1 or 2 percent worldwide but varies greatly from country to country. In the United States, asthma affects about 6.9 percent of children. Typically, an asthma attack begins within minutes after exposure to a triggering agent. Symptoms include a sensation of tightness in the chest, coughing and wheezing, and difficulty in breathing. Persons having attacks usually find it more difficult to exhale then inhale, which causes overinflation of the chest and impaired lung functions. The breathing difficulty is alleviated somewhat by leaning forward and supporting the trunk with the arms on some object. Attacks that last several hours or more, even several days, despite treatment are called status asthmaticus. Patients with this condition develop a rapid pulse as the heart attempts to compensate for the lack of oxygen in the blood by beating faster. ...

Get instant access to over 50,000 essays.
Write better papers. Get better grades.


Already a member? Login


CITE THIS PAGE:

Asthma 2. (2007, June 29). Retrieved December 23, 2024, from http://www.essayworld.com/essays/Asthma-2/67188
"Asthma 2." Essayworld.com. Essayworld.com, 29 Jun. 2007. Web. 23 Dec. 2024. <http://www.essayworld.com/essays/Asthma-2/67188>
"Asthma 2." Essayworld.com. June 29, 2007. Accessed December 23, 2024. http://www.essayworld.com/essays/Asthma-2/67188.
"Asthma 2." Essayworld.com. June 29, 2007. Accessed December 23, 2024. http://www.essayworld.com/essays/Asthma-2/67188.
JOIN NOW
Join today and get instant access to this and 50,000+ other essays


PAPER DETAILS
Added: 6/29/2007 12:14:04 AM
Category: Science & Nature
Type: Premium Paper
Words: 447
Pages: 2

Save | Report

SHARE THIS PAPER

SAVED ESSAYS
Save and find your favorite essays easier

SIMILAR ESSAYS
» Asthma 2
» Asthma In A Fitness/School Sett...
» Describe The Main Limitations S...
» Asthma And How Medication Allow...
» Bronchial Asthma
» Creatine 2
» Air Pollution 2
» Effects Of Smoking 2
» Acid Rain 2
» Hypnosis 2
Copyright | Cancel | Contact Us

Copyright © 2024 Essayworld. All rights reserved