lung cancer screening!

lung cancer screening

Comprehensive Analysis

1) "Lung" -- As to lung cancer screening lung Pronunciation: 'l&[ng] Function: noun Etymology: Middle English lunge, from Old English lungen; akin to Old High German lungun lung, lIhti light in weight -- more at LIGHT 1 a : one of the usually paired compound saccular thoracic organs that constitute the basic respiratory organ of air-breathing vertebrates b : any of various respiratory organs of invertebrates 2 a : a device enabling individuals abandoning a submarine to rise to the surface b : a mechanical device for regularly introducing fresh air into and withdrawing stale air from the lung : RESPIRATOR -- compare IRON LUNG - lung�ful /-"ful/ noun Pronunciation Symbols Respiratory system The lungs flank the heart and great vessels in the chest cavity. (Source: Gray's Anatomy of the Human Body, 20th ed. 1918.) Air enters and leaves the lungs via a conduit of cartilaginuous passageways — the bronchi and bronchioles. In this image, lung tissue has been dissected away to reveal the bronchioles , 20th ed. 1918.) The lung is the essential respiration organ in air-breathing vertebrates. Its principal function is to transport oxygen from the atmosphere into the bloodstream, and to excrete 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. The lungs also have nonrespiratory functions. Medical terms related to the lung often begin with pulmo-, from the Latin pulmonarius ("of the lungs"), or with pneumo- (from Greek πνεύμω "lung")[1] [2] 1 Respiratory function 2 Nonrespiratory functions 3 Mammalian lungs 4 Anatomy 5 Avian lungs 6 Reptilian lungs 7 Amphibian lungs 8 Invertebrate lungs 9 Origins 10 See also 11 Further reading 12 References 13 Footnotes Energy production from aerobic respiration requires oxygen and produces carbon dioxide as a by-product, creating a need for an efficient means of oxygen delivery to cells and excretion of carbon dioxide from cells. In small organisms, such as single-celled bacteria, this process of gas exchange can take place entirely by simple diffusi..." 2) "Cancer" -- As to lung cancer screening can�cer Pronunciation: 'kan(t)-s&r Function: noun Etymology: Middle English, from Latin (genitive Cancri), literally, crab; akin to Greek karkinos crab, cancer 1 capitalized a : a northern zodiacal constellation between Gemini and Leo b (1) : the fourth sign of the zodiac in astrology -- see ZODIAC table (2) : one born under the sign of Cancer 2 [Latin, crab, cancer] a : a malignant tumor of potentially unlimited growth that expands locally by invasion and systemically by metastasis b : an abnormal bodily state marked by such tumors 3 : something evil or malignant that spreads destructively <the cancer of hidden resentment -- Irish Digest> 4 a : an enlarged tumorlike plant growth (as that of crown gall) b : a plant disease marked by such growths - can�cer�ous /'kan(t)s-r&s, 'kan(t)-s&-/ adjective - can�cer�ous�ly adverb Pronunciation Symbols Cancer Classification & external resources When normal cells are damaged beyond repair, they are eliminated by apoptosis. Cancer cells avoid apoptosis and continue to multiply in an unregulated manner DiseasesDB 28843 MedlinePlus 001289 MeSH C04 Cancer is a class of diseases or disorders characterized by uncontrolled division of cells and the ability of these cells to spread, either by direct growth into adjacent tissue through invasion, or by implantation into distant sites by metastasis (where cancer cells are transported through the bloodstream or lymphatic system). Cancer may affect people at all ages, but risk tends to increase with age. It is one of the principal causes of death in developed countries. There are many types of cancer. Severity of symptoms depends on the site and character of the malignancy and whether there is metastasis. A definitive diagnosis usually requires the histologic examination of tissue by a pathologist. This tissue is obtained by biopsy or surgery. Most cancers can be treated and some cured, depending on the specific type, location, and stage. Once diagnosed, cancer is usually treated with a combination of surgery, chemotherapy and radiotherapy. As research develops, treatments are becoming more specific for the type of cancer pathology. Drugs that target specific cancers already exist for several cancers. If untreated, cancers may eventually cause illness and death, though this is not always the case. The unregulated growth that characterizes cancer is caused by damage to DNA, resulting in mutations to genes that encode for proteins controlling cell division. Many mutation events may be required to transform a normal ce..." 3) "Screening" -- As to lung cancer screening 2screen Function: verb transitive verb 1 : to guard from injury or danger 2 a : to give shelter or protection to with or as if with a screen b : to separate with or as if with a screen; also : to shield (an opponent) from a play or from view of a play 3 a : to pass (as coal, gravel, or ashes) through a screen to separate the fine part from the coarse; also : to remove by a screen b (1) : to examine usually methodically in order to make a separation into different groups (2) : to select or eliminate by a screening process (3) : to test or examine for the presence of something (as a disease) <patients were screened for hepatitis> 4 : to provide with a screen to keep out pests (as insects) 5 a (1) : to present (as a motion picture) for viewing on a screen (2) : to view the presentation of (as a motion picture) b : to present in a motion picture intransitive verb 1 : to appear on a motion-picture screen 2 : to provide a screen in a game or sport synonym see HIDE - screen�able /'skrE-n&-b&l/ adjective - screen�er noun Pronunciation Symbols Screening, in general, is the investigation of a great number of something (for instance, people) looking for those with a particular problem or feature. One example is at an airport, where many bags get x-rayed to try to detect any which may contain weapons or explosives. People are also screened going through a metal detector. Even though the procedure aims at a large number of screens, it is always equivalent to sampling in statistics, because the complete population is almost always inaccessible for screening. Screening has other, more specific meanings: In color printing, screening refers to a process that represents lighter shades as tiny dots, rather than solid areas, of ink In physics, electric field screening refers to the dampening of an electric field by mobile charges In atomic physics and chemistry, screening effect refers to the observation that electronic properties of atoms are better described if atoms had a lower effective nuclear charge than that would be otherwise expected from the number of protons present. Screening (economics) Screening (medicine) Screening for pharmacological activity during drug discovery Part of the process of Environmental impact assessment. Hampering an opponent's attempts at reconnaissance A type of tactic (sometimes legal, sometimes not) in sport games such as basketball or volleyball A screening can refer to the display of a film in a movie theatre or screening room ..." 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