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artificial respiration
artificial respiration any measure that causes air to flow in and out of a person's lungs when natural breathing is inadequate or ceases, as in respiratory paralysis, drowning, electric shock, choking, gas or smoke inhalation, or poisoning. Respiration can be taken over by an artificial lung (espec...
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sleep apnea
sleep apnea episodes of interrupted breathing during sleep. Obstructive sleep apnea is a common disorder in which relaxation of muscles in the throat repeatedly close off the airway during sleep; the person wakes just enough to take a gasping breath. This process is repeated many times during sleep...
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snoring
snoring rough, vibratory sounds made in breathing during sleep or coma. The noisy breathing is the result of an open mouth and a relaxation of the palate; it is frequently induced by lying on one's back. Snoring may indicate some obstruction to nasal breathing such as enlarged adenoids; this is esp...
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respiratory system
respiratory system System in air-breathing animals concerned with gas exchange. The respiratory tract begins with the nose and mouth, through which air enters the body. Air then passes through the larynx and into the trachea. At its lower end, the trachea branches into two bronchi, each bronchus le...
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breathing
breathing is the spontaneous taking in and giving out of air from the lungs, the product of the visible movements of the ribcage and abdomen. In earlier years breathing was synonymous with life itself, for with the ‘last breath’ its absence signified death and departure of the soul. Ho...
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pharynx
pharynx , area of the gastrointestinal and respiratory tracts which lies between the mouth and the esophagus. In humans, the pharynx is a cone-shaped tube about 4 1/2 in. (11.43 cm) long. At its upper end, it is continuous with the mouth and nasal passages, and connects with the ears via the Eus...
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halitosis
halitosis , unpleasant odor carried on the breath. It is usually the result of gum disorder, tooth decay, smoking, indulgence in aromatic foods, or a mild digestive upset. Known commonly as bad breath, halitosis may also be indicative of lung or sinus infection, uremia, or cirrhosis of the liver. Th...
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lungs
lungs elastic organs used for breathing in vertebrate animals, excluding most fish, which use gills , and a few amphibian species that respire through the skin. The word is sometimes applied to the respiratory apparatus of lower animals.
The human lungs are paired organs, located on either si...
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salamander
salamander an amphibian of the order Urodela, or Caudata. Salamanders have tails and small, weak limbs; superficially they resemble the unrelated lizards (which are reptiles), but they are easily distinguished by their lack of scales and claws, and by their moist, usually smooth skins. Salamander...
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tadpole
tadpole larval, aquatic stage of any of the amphibian animals. After hatching from the egg, the tadpole, sometimes called a polliwog, is gill-breathing and legless and propels itself by means of a tail. During the period of metamorphosis it develops the lungs, legs, and other organs of the adult ...
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