News tagged with lung

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

Is there a link between telomere length and cancer?

Telomeres are regions of repetitive DNA at the end of human chromosomes, which protect the end of the chromosome from damage. Whilst shorter telomeres are hypothesized biological markers of older age and have been linked ...

Mar 23, 2017
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Surprising new role for lungs—making blood

Using video microscopy in the living mouse lung, UC San Francisco scientists have revealed that the lungs play a previously unrecognized role in blood production. As reported online March 22, 2017 in Nature, the researchers ...

Mar 22, 2017
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Radiotherapy risks are much higher for smokers

Smokers treated for breast cancer have much higher risks than non-smokers of developing lung cancer or heart attack as a result of radiotherapy - according to a new study funded by Cancer Research UK and published today in ...

Mar 20, 2017
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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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