News tagged with lung

Related topics: protein · immune system · cystic fibrosis · chronic obstructive pulmonary disease · asthma

New '4-D' lung cancer model could quicken discoveries

Without good models to study cancer metastasis—the spread of cancer cells from one organ to another—cancer researchers have struggled to understand tumor progression fully, and new therapies targeting the main causes ...

Apr 15, 2015
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Smokers underestimate risks of a few cigarettes

Many people still dangerously underestimate the health risks associated with smoking even a few cigarettes a day, despite decades of public health campaigning, French researchers have reported at the European Lung Cancer ...

Apr 17, 2015
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Lung

The lung or pulmonary system is the essential respiration organ in air-breathing animals, including most tetrapods, a few fish and a few snails. In mammals and the more complex life forms, the two lungs are located in the chest on either side of the heart. Their principal function is to transport oxygen from the atmosphere into the bloodstream, and to release carbon dioxide from the bloodstream into the atmosphere. This exchange of gases is accomplished in the mosaic of specialized cells that form millions of tiny, exceptionally thin-walled air sacs called alveoli.

In order to completely explain the anatomy of the lungs, it is necessary to discuss the passage of air through the mouth to the alveoli. Once air progresses through the mouth or nose, it travels through the oropharynx, nasopharynx, the larynx, the trachea, and a progressively subdividing system of bronchi and bronchioles until it finally reaches the alveoli where the gas exchange of carbon dioxide and oxygen takes place.

The drawing and expulsion of air (ventilation) is driven by muscular action; in early tetrapods, air was driven into the lungs by the pharyngeal muscles, whereas in reptiles, birds and mammals a more complicated musculoskeletal system is used.

Medical terms related to the lung often begin with pulmo-, from the Latin pulmonarius ("of the lungs"), or with pneumo- (from Greek πνεύμων "lung")

This text uses material from Wikipedia, licensed under CC BY-SA

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