upper respiratory tract

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Related to upper respiratory tract: lower respiratory tract

upper respiratory tract (URT)

one of the two divisions of the respiratory system. The URT consists of the nose, nasal cavity, ethmoidal air cells, frontal sinuses, sphenoidal sinuses, maxillary sinus, larynx, and trachea. The URT conducts air to and from the lungs and filters, moistens, and warms the air during each inspiration. Infection and irritation of the URT are common and often spread to the lower respiratory tract, where they may cause serious complications. Compare lower respiratory tract. See also larynx, nose, trachea.
References in periodicals archive ?
These findings demonstrate that short-term treatment with the pelargonium extract EPs[R]7630 markedly improved symptoms of upper respiratory tract viral infection and significantly reduced the incidence of asthma attack frequency in susceptible children.
That being said, negative results on those upper respiratory tract specimens do not necessarily rule out novel H1N1 in patients with lower respiratory tract infections.
Health-related quality of life is not significantly improved in patients receiving antibiotics for an upper respiratory tract infection when compared with subjects receiving no antibiotic.
Keywords: Pinimenthol[R] ointment; Eucalyptus oil/pine needle oil/menthol; Upper respiratory tract infections; Tolerability; Adverse drug reactions
How does one define an upper respiratory tract infection?
Habitat destruction by real estate developers, miners and the citrus industry; the lack of controlled bumings (which promote growth of the herbaceous plants it lives on); and now a regional outbreak of an upper respiratory tract disease that's devastated the desert tortoise in the Southwest are all taking their toll on this lowly, lumbering beast.
1] found that Montmorency tart cherry juice reduced upper respiratory tract symptoms associated with marathon running in study participants.
LAHORE -- The recent drop in the temperature in the absence of rains has become instrumental in spreading upper respiratory tract infection, pneumonia and bronchitis as city temperature dropped to 4.
A trial of 759 generally healthy people found that vitamin D and calcium had no effect on upper respiratory tract infections.
Peer-reviewed clinical research demonstrates the ability of Wellmune WGP to reduce upper respiratory tract infection symptoms and improve overall health even during periods of high physical and lifestyle stress.
Washington, June 20 (ANI): A new research has suggested that oral bacteria can offer probiotic potential against upper respiratory tract infections.

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