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	Respiratory tract - Wikipedia, the free encyclopedia
		Lungs: respiratory bronchioles, alveolar ducts, alveolar sacs, and alveoli
		Most of the respiratory tract exists merely as a piping system for air to travel in the lungs; alveoli are the only part of the lung that exchanges oxygen and carbon dioxide with the blood.
		The respiratory tract is covered in an epithelium, the type of which varies down the tract.
	en.wikipedia.org /wiki/Respiratory_tract (418 words)

	Upper respiratory tract infection - Wikipedia, the free encyclopedia
		Upper respiratory tract infection, also popularly known as either the acronym URTI or URI, is the disease characterised by an acute infection which involves the upper respiratory tract: nose, sinuses, pharynx, or larynx.
		Otitis media is an infection of the ear (which is part of the auditory system) often associated with upper respiratory infections.
		Influenza is a more systemic illness which can also involve the upper respiratory tract and should be recognized as distinct from other causes of URI.
	en.wikipedia.org /wiki/Upper_respiratory_tract_infection (341 words)

	Introduction to Upper Respiratory Tract Infections
		The human respiratory tract is exposed to many potential pathogens via the smoke, soot, and dust that is inhaled from the air.
		Particles or respiratory pathogens which reach the lower respiratory tract are first trapped in the mucus layer and are driven upwards by ciliary action (the ciliary elevator) to the back of the throat.
		If the invader has avoided the physical defense mechanisms of the upper respiratory tract, and is deposited in the lower respiratory tract or lung, it must either avoid phagocytosis, or be able to survive and multiply in the phagocytic cell.
	www.kcom.edu /faculty/chamberlain/Website/lectures/lecture/introurt.htm (964 words)

	Respiratory Tract Infection in Reptiles
		In reptiles, respiratory tract infection (RTI) are caused by a bacterial infection in the lungs.
		Unfortunately, respiratory infections are all too common in captive snakes during the winter because their keepers fail to realize that, as the outside temperatures drop, the temperatures inside the building drop, and so the heating equipment that provided sufficient heat during the summer cannot provide sufficient heat during the winter.
		Other situations and conditions that may cause symptoms similar to respiratory infections are inclusion body disease in boas and pythons and ingestion of toxic substances - both of which require veterinary diagnosis and, in the latter case, intervention.
	www.anapsid.org /rti.html (861 words)

	Medmicro Chapter 93
		Bronchitis is usually preceded by an upper respiratory tract infection or forms part of a clinical syndrome in diseases such as influenza, rubeola, rubella, pertussis, scarlet fever and typhoid fever.
		Bronchiolitis is a viral respiratory disease of infants and is caused primarily by respiratory syncytial virus.
		Symptoms of an upper respiratory tract infection with a cough is the typical initial presentation in acute bronchitis.
	gsbs.utmb.edu /microbook/ch093.htm (5465 words)

	Respiratory tract cryptosporidiosis in immunosuppressed rat is associated with an epithelial metaplasia.
		Respiratory tract cryptosporidiosis in immunosuppressed rat is associated with an epithelial metaplasia.
		On D10 and D14, C. parvum were present in the respiratory tract of all animals in association with the progressive appearance of an immature malpighian metaplasia.
		The respiratory tract appears to be a fully permissive area for the protozoa in immunosuppressed rats.
	www.aegis.com /aidsline/1997/jul/m9771506.html (410 words)

	Lab 15: Respiratory Tract, Lungs (Site not responding. Last check: 2007-11-06)
		The respiratory bronchiole is not a complete tube, rather it forms a crescent at or near the beginning of the alveolar duct.
		The wall of the respiratory bronchiole is typically thin, lined with simple ciliated and non-ciliated (Clara cells) cuboidal epithelia that transitions into squamous at the alveolar duct/respiratory bronchiole junction, and has a layer of smooth muscle in the submucosa.
		It is typically difficult observe the full respiratory bronchiolar unit (respiratory bronchiole, the alveolar duct it feeds, the sacs that the duct feeds, and the alveoli that the sac feeds-all of which are fed by the final tree of the respective pulmonary artery of the unit).
	anatomy.iupui.edu /courses/histo_D502/D502f04/Labs.f04/Lab15/Lab.15.respir.f04.html (2366 words)

	Bacterial Flora of the Respiratory Tract
		Diseases / Respiratory Infections / Bacterial Flora of the Respiratory Tract
		Clinical evaluations of the lower respiratory tract demonstrated that 35-50% of healthy dogs were culture-positive (11).
		True primary pathogens of the lower respiratory tract, however, are viruses and bacteria, including Bordetella bronchiseptica, Mycoplasma, Streptococcus zooepidemicus and Mycobacteria, which are able to overcome respiratory defense mechanism and induce disease (11).
	www.baytril.com /43/Bacterial_Flora_of_the_Respiratory_Tract.htm (135 words)

	Respiratory Tract Infections - The Travel Doctor (Site not responding. Last check: 2007-11-06)
		The majority of respiratory tract infections are viral and are therefore not susceptible to antibiotic treatment.
		Respiratory diphtheria is a bacterial infection that causes a moderately sore throat with a greyish membrane over the infected area (usually membranes of the tonsils, pharynx, or nose) with low grade fever.
		Myocarditis, polyneuritis, and airway obstruction are common complications of respiratory diphtheria; death occurs in 5%-10% of respiratory cases.
	www.traveldoctor.co.uk /chest.htm (2394 words)

	Upper Respiratory Tract Infection
		The upper respiratory tract consists of the nose, nasal cavity, larynx, and trachea, as well as some of the sinuses and air cells.
		Upper respiratory tract infections include the common cold (rhinitis), influenza, laryngitis (inflammation of the voice box), pharyngitis (sore throat), sinusitis, tonsillitis, and croup (in children).
		Upper respiratory tract infections are diagnosed according to the types and durations of symptoms.
	www.hmc.psu.edu /healthinfo/uz/uprt.htm (649 words)

	Bird Respiratory System
		The avian respiratory system is different from that of other vertebrates, with birds having relatively small lungs plus nine air sacs that play an important role in respiration (but are not directly involved in the exchange of gases).
		Surfactant is a mixture of lipids and proteins that acts in the air capillaries of avian lungs both as an "antiglue" (preventing the adhesion of respiratory surfaces that may occur when the lungs collapse, e.g., during diving, swallowing of prey or on expiration) and to prevent liquid influx into the lungs (Daniels et al.
		Ventilation and respiratory rate are regulated to meet the demands imposed by changes in metabolic activity (e.g., rest and flight) as well as other sensory inputs (e.g., heat and cold).
	people.eku.edu /ritchisong/birdrespiration.html (3240 words)

	Lab 15: Respiratory Tract, Lungs (Site not responding. Last check: 2007-11-06)
		This is a respiratory bronchiole that connects to (conduit to) a alveolar duct, the latter being the large space lined by a thin epithelia.
		The wall of the respiratory bronchiole is typically thin, lined with simple ciliated and non-ciliated (Clara cells) cuboidal epithelia that transitions into squamous at the alveolar duct/repsiratory bronchiole junction, and has a layer of smooth muscle in the submucosa.
		It is typically difficult observe the full respiratory bronchiolar unit (respiratory bronchiole, the alveolar duct it feeds, the sacs that the duct feeds, and the alveoli that the sac feeds-all of which are feed by the final tree of the respective pulmonary artery of the unit).
	anatomy.iupui.edu /courses/histo_D502/Lab.15.respir.f01.html (2082 words)

	Respiratory Syncytial Virus (RSV) Facts (Site not responding. Last check: 2007-11-06)
		Respiratory syncytial virus (RSV) infection is a viral disease of the lungs.
		Respiratory syncytial virus (RSV) infection is one of the most important causes of lower respiratory illness in infants and young children.
		RSV is the leading cause of lower respiratory tract illness in infants and young children.
	www.astdhpphe.org /infect/rsv.html (727 words)

	Respiratory Syncytial Virus
		Respiratory syncytial virus (RSV) is a major cause of respiratory illness in young children.
		In children younger than age 3, RSV can cause a lower respiratory tract illness like bronchiolitis or pneumonia and in more severe cases can lead to respiratory failure.
		Children who are hospitalized with lower respiratory tract illness usually spend 5 to 7 days in the hospital.
	kidshealth.org /parent/infections/bacterial_viral/rsv.html (1166 words)

	Lungs and Respiratory System
		Cilia lining the nose and other parts of the upper respiratory tract move back and forth, pushing foreign matter that comes in with air (like dust) either toward the nostrils to be expelled or toward the pharynx.
		The respiratory system is susceptible to a number of diseases, and the lungs are prone to a wide range of disorders caused by pollutants in the air.
		Although some respiratory diseases can't be prevented, your child or teen can prevent many chronic lung and respiratory illnesses by avoiding smoking, staying away from pollutants and irritants, washing hands often to avoid infection, and getting regular medical checkups.
	kidshealth.org /parent/general/body_basics/lungs.html (2317 words)

	VIRAL RESPIRATORY INFECTIONS
		An important concept is that a wide variety of respiratory pathogens may cause one clinical syndrome and, vice versa, any one pathogen may cause a wide range of clinical diseases - see diagram attached, followed by a list of the main respiratory viruses.
		Isolation of a paramyxovirus from a patient is strong evidence for a cause of a respiratory infection.
		Respiratory syncytial virus and measles virus infections are fairly clearcut.
	web.uct.ac.za /depts/mmi/jmoodie/vires2.html (2059 words)

	Respiratory Tract Infections: Viral Infections: Merck Manual Home Edition
		Respiratory tract infections affect the nose, throat, and airways and may be caused by any of several different viruses.
		In children, rhinoviruses, influenza viruses (during annual winter epidemics), parainfluenza viruses, respiratory syncytial virus (RSV), and certain strains of adenovirus are the main causes of viral respiratory infections.
		Generally, otherwise healthy children with mild upper respiratory tract symptoms do not need to see a doctor unless they have trouble breathing, are not drinking, or have a fever for more than a day or two.
	www.merck.com /mmhe/sec23/ch273/ch273i.html (1024 words)

	CDC - Respiratory Tract Reinfections by the New Human Metapneumovirus in an Immunocompromised Child
		This virus has been reported to cause respiratory tract infections in children <5 years of age from the Netherlands (5), as well as in elderly patients from North America (7).
		We describe a case of recurrent HMPV respiratory tract infections, associated with genetically distinct viral strains, in an immunocompromised child.
		The patient received another course of intravenous chemotherapy (daunorubicin and vincristine) on January 25 at the outpatient clinic, and her upper respiratory tract symptoms were then treated with an oral antibiotic (axetil cefuroxime).
	www.cdc.gov /NCIDOD/EID/vol8no9/02-0238.htm (1863 words)

	Respiratory Tract Diseases
		Respiratory Tract Diseases; Respiratory Tract Diseases / etiology; Respiratory Tract Diseases / in infancy and childhood; Respiratory Tract Diseases / pathology; Respiratory Tract Diseases / radiography
		Respiratory Tract Diseases; Respiration; Lung Neoplasms; Lung Diseases; Lung;
		Respiratory Tract Diseases / in infancy and childhood
	omni.ac.uk /browse/mesh/D012140.html (1875 words)

	Spotlight 5: Respiratory Infections
		Respiratory infections account for 75% to 90% of infections in child care settings, according to several large studies.
		No significant difference in the rates of illness from respiratory tract infections was found in centers with interventions and those without.
		One strategy for future research in the control of respiratory tract infections in child care would be to increase the individual child's immunity to the most important respiratory agents.
	www.fpg.unc.edu /~ncedl/pages/spotlt5.cfm (789 words)

	Structure and Function of the Respiratory Tract in Dogs - PetPlace.com (Site not responding. Last check: 2007-11-06)
		Besides breathing, the respiratory tract serves other important roles, such as the humidification and warming of air before it enters the body, the trapping and expelling of foreign substances, facilitation of the sense of smell, and the production of vocal sounds (e.g.
		The respiratory system begins at the nostrils, involves several structures of the head, continues down the neck and ends at the lungs that lie in the chest cavity.
		The portion of the pharynx that is part of the respiratory tract is referred to as the nasopharynx, and it connects the back of the nasal cavity to the larynx (voice box).
	www.petplace.com /articles/artShow.asp?artID=4857 (678 words)

	Upper Respiratory Tract Infections
		Upper respiratory tract infection (URI) is a nonspecific term used to describe acute infections involving the nose, paranasal sinuses, pharynx, larynx, trachea, and bronchi.
		It results in a 30-50% reduction of respiratory illnesses, physician visits, and sick leave among vaccinated healthy adults, as well as reduction in hospitalization related to acute worsening of chronic obstructive pulmonary disease or congestive heart failure, and death from any cause among vaccinated older persons.
		Vaccination is recommended for almost one half of the US population, including children aged 6-23 months, adults aged 50 years and older, patients with chronic medical conditions that predispose for development of influenza-related complications, their household members, and health care providers.
	www.clevelandclinicmeded.com /diseasemanagement/infectiousdisease/urti/urti.htm (5386 words)

	Respiratory Tract (Site not responding. Last check: 2007-11-06)
		The respiratory tract (or system) is a complex arrangement of organs and tissues.
		Upper respiratory tract with the upper portion of the trachea and esophagus included.
		Key structural features of the respiratory tract (nose, pharynx, larynx, trachea, bronchi and bronchioles, gas exchange airways, and lymphatic system) are summarized below.
	www.radiation-scott.org /deposition/respiratory.htm (717 words)

	RSV Info Center
		The majority of lower respiratory tract infections in children are caused by viruses, and RSV is generally recognized as the most frequent agent responsible for these infections.
		RSV affects the upper and lower respiratory tracts, but is most prevalent in lower respiratory illnesses such as pneumonia and bronchiolitis.
		Bronchiolitis begins with mild symptoms of an upper respiratory tract infection and progresses to include cough, wheeze, onset of dyspnea, increased respiratory rate and retractions of the respiratory muscles, indicating lower respiratory tract involvement.
	www.rsvinfo.com /diagnosing/diagnosing.html (1087 words)

	[No title]
		The respiratory bovine coronavirus had not been considered a factor in shipping-fever pneumonia prior to this discovery, said Dr. Johannes Storz of the LSU School of Veterinary Medicine.
		The respiratory coronavirus infects cells that line the upper and lower respiratory tracts, including the lungs.
		Storz said the coronavirus kills the cells and causes inflammation in the mucous-membrane passages of the respiratory tract.
	appl003.lsu.edu /unv002.nsf/8c84e04d068ce275862564920058523e/797909d22ddc7de386256a4c006d2dd1?OpenDocument (554 words)

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