Oncology & Cancer

Are we overestimating lifetime cancer risks?

The method employed in Australia to calculate the lifetime risks of cancer diagnosis and mortality overestimates these risks, especially for men, according to the authors of research published online today by the Medical ...

Oncology & Cancer

Lung cancer incidence rates generally declined from 2007 to 2016

(HealthDay)—The incidence rates of lung cancer declined in most age and sex groups from 2007 to 2016, with the smallest decrease seen among women living in nonmetropolitan counties, according to research published in the ...

Medical research

Stem cell transplants used to grow fully functional lungs in mice

Researchers at Columbia University were able to grow fully functional lungs in mouse embryos using transplanted stem cells. The findings suggest that it may be ultimately possible to use the technique to grow human lungs ...

Oncology & Cancer

New pathway for lung cancer treatment

MIT cancer biologists have identified a new therapeutic target for small cell lung cancer, an especially aggressive form of lung cancer with limited options for treatment.

Oncology & Cancer

Cardiorespiratory fitness may improve lung cancer outcomes

(HealthDay)—Higher cardiorespiratory fitness is associated with a lower risk for lung cancer incidence in former smokers and a reduced risk for cancer mortality in current smokers diagnosed with lung cancer, according to ...

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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