what is upper respiratory tract
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Upper Respiratory Tract Infections Definition and Causes. Upper respiratory tract infection (URI) is a nonspecific term used to describe acute infections involving the nose, paranasal sinuses, pharynx, larynx, trachea, and bronchi. The prototype is the illness known as the common cold, which is discussed here, in addition to pharyngitis, sinusitis, and tracheobronchitis.
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Respiratory disease The most common upper respiratory tract infection is the common cold, however, infections of specific organs of the upper respiratory tract such as sinusitis, tonsillitis, otitis media, pharyngitis and laryngitis are also considered upper respiratory tract infections.or the millions of people who suffer from respiratory diseases, each breath is a major accomplishment. These include diseases of the lung, pleural cavity, bronchial tubes, trachea, upper respiratory tract and of the nerves and muscles of breathing.
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Respiratory Lower respiratory tract: Composed of the trachea, the lungs, and all segments of the bronchial tree (including the alveoli), the organs of the lower respiratory tract are located inside the chest cavity. Trachea: Located just below the larynx, the trachea is the main airway to the lungs.
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Respiratory tract The lower airways or lower respiratory tract includes the portion of the larynx below the vocal cords, trachea, bronchi and bronchioles. The lungs can be included in the lower respiratory tract or as separate entity and include the respiratory bronchioles, alveolar ducts, alveolar sacs, and alveoli.he lungs are the largest organs in the lower respiratory tract. The lungs are suspended within the pleural cavity of the thorax. The pleurae are two thin membranes, one cell layer thick, which surrounds the lungs.
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- Upper respiratory tract: This includes the nose, mouth, and the beginning of the trachea (the section that takes air in and lets it out). Lower respiratory tract: This includes the trachea, the bronchi, broncheoli and the lungs (the act of breathing takes place in this part of the system).
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Respiratory tract The respiratory tract is divided into the upper airways and lower airways. The upper airways or upper respiratory tract includes the nose and nasal passages, paranasal sinuses, the pharynx, and the portion of the larynx above the vocal cords.
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Human Physiology/Print Version The upper and lower respiratory system. The respiratory system is divided into the upper and lower respiratory tracts. The upper respiratory system consists of the organs located above the thorax. Organs of the respiratory system (upper tract). 1  nose. 2  pharynx.3  larynx. 4  part of the trachea.he upper and lower respiratory system. The respiratory system is divided into the upper and lower respiratory tracts. The upper respiratory system consists of the organs located above the thorax. Organs of the respiratory system (upper tract). 1  nose. 2  pharynx.
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Respiratory tract The respiratory tract is divided into the upper airways and lower airways. The upper airways or upper respiratory tract includes the nose and nasal passages, paranasal sinuses, the pharynx, and the portion of the larynx above the vocal cords.he lungs are the largest organs in the lower respiratory tract. The lungs are suspended within the pleural cavity of the thorax. The pleurae are two thin membranes, one cell layer thick, which surrounds the lungs.
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X-ray (Radiography) - Upper GI Tract Upper gastrointestinal tract radiography, also called an upper GI, is an x-ray examination of the esophagus, stomach and first part of the small intestine (also known as the duodenum).
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Common Cold Upper Respiratory Tract Infections Doctors often just use the term upper respiratory tract infection (URTI) to include any, or all, of these infections. Most URTIs are due to a viral infection. The diagram above shows the sites of a range of respiratory infections. This leaflet just deals with the common cold and URTIs.
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- Upper respiratory infections are caused not simply by the presence of an invading microorganism, but also by the failure of the immune system to eliminate the intruder.
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Upper respiratory tract The human respiratory system is divided into the upper and lower respiratory tracts. Upper respiratory tract. The major passages and structures of the upper respiratory tract include the nose or nostrils, nasal cavity, mouth, throat (pharynx), and voice box (larynx).
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- Classification [edit]. The respiratory epithelium lining the upper respiratory airways is classified as ciliated pseudostratified columnar epithelium. This designation is due to the arrangement of the multiple cell types composing the respiratory epithelium.
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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.
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Respiratory The respiratory system is divided into two main components: Upper respiratory tract: Composed of the nose, the pharynx, and the larynx, the organs of the upper respiratory tract are located outside the chest cavity.
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Upper Respiratory Tract Infection The common cold refers to a viral infection of the upper respiratory tract. This infection can be due to different types of viruses, so there is no one cold virus.. In fact, over 200 types of viruses are known to cause the common cold. Characteristic symptoms include. cough, stuffy or runny nose, scratchy or sore throat, sneezing.
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- The most common sites of bacterial infections in the upper respiratory system are the sinuses and throat. Pneumonia is the most common bacterial infection of the lower respiratory system.
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Upper Respiratory Tract Infection Upper respiratory infections in the lower part of the upper respiratory tract, such as, laryngotracheitis, are more commonly featured with dry cough and hoarseness or loss of voice. Barking or whooping cough, gagging, rib pain (from severe cough) are other symptoms and signs.
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- Upper Respiratory Infections. Infections of the respiratory tract are grouped according to their symptomatology and anatomic involvement. Acute upper respiratory infections (URI) include the common cold, pharyngitis, epiglottitis, and laryngotracheitis (Fig. 93-1).ronchitis and bronchiolitis involve inflammation of the bronchial tree. 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.
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Upper Respiratory Infection Sometimes, the inflammation caused by the upper respiratory infection may cause drainage problems within the sinuses or the middle ear, which can create the potential of secondary bacterial infections such as sinusitis or otitis media.
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- Viral illnesses are the most common cause of upper respiratory symptoms. Symptoms of a viral illness often appear over several hours without prior illness. Common viral illnesses include colds and the flu (influenza). Bacterial respiratory tract infections are less common than viral infections.acterial infections may develop after a viral illness such as a cold or the flu. Bacterial infections may affect the upper or lower respiratory system, and symptoms tend to localize to one area.
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- The human respiratory system is divided into the upper and lower respiratory tracts. Upper respiratory tract. The major passages and structures of the upper respiratory tract include the nose or nostrils, nasal cavity, mouth, throat (pharynx), and voice box (larynx).he human respiratory system is divided into the upper and lower respiratory tracts. Upper respiratory tract. The major passages and structures of the upper respiratory tract include the nose or nostrils, nasal cavity, mouth, throat (pharynx), and voice box (larynx).
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Respiratory system The respiratory tract cleans, warms, and moistens air during its trip to the lungs. The tract can be divided into an upper and a lower part. The upper part consists of the nose, nasal cavity, pharynx (throat), and larynx (voice box). The lower part consists of the trachea (windpipe), bronchi, and bronchial tree.he exchange of these gases occurs across cell membranes both in the lungs (external respiration) and in the body tissues (internal respiration). Breathing, or pulmonary ventilation, describes the process of inhaling and exhaling air. The human respiratory system consists of the respiratory tract and the lungs.
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What is a lower respiratory infection? Lower respiratory (tract) infection or LTRI is a generic term for an acute infection of the trachea (windpipe), airways and lungs, which make up the lower respiratory system. LTRIs include bronchitis, croup and pneumonia. Although influenza (the flu) can involve the lower respiratory system, it is not considered among the group of illnesses referred to by the term lower respiratory infection..
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Upper Respiratory Tract Infection The common cold refers to a viral infection of the upper respiratory tract. This infection can be due to different types of viruses, so there is no one  cold virus.. In fact, over 200 types of viruses are known to cause the common cold. Characteristic symptoms include. 1  cough, 2  stuffy or runny nose, 3  scratchy or sore throat, 4  sneezing.
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Respiratory tract The upper respiratory tract, can refer to the parts of the respiratory system lying above the sternal angle (outside of the thorax), above the glottis (vocal cords), or above the cricoid cartilage.So that the larynx is sometimes included in the upper airway and sometimes in the lower airway.he lower airways or lower respiratory tract includes the portion of the larynx below the vocal cords, trachea, bronchi and bronchioles. The lungs can be included in the lower respiratory tract or as separate entity and include the respiratory bronchioles, alveolar ducts, alveolar sacs, and alveoli.