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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 folds (cords). The lower airways or lower respiratory tract includes the portion of the larynx below the vocal folds, trachea, bronchi and bronchioles.
The upper respiratory tract is considered the airway above the glottis or vocal cords; sometimes, it is taken as the tract above the cricoid cartilage.This part of the tract includes the nose, sinuses, pharynx, and larynx.
An upper respiratory tract infection (URTI) is an illness caused by an acute infection, which involves the upper respiratory tract, including the nose, sinuses, pharynx, larynx or trachea. [3] [4] This commonly includes nasal obstruction, sore throat, tonsillitis, pharyngitis, laryngitis, sinusitis, otitis media, and the common cold.
Upper respiratory tract infections affect the sinuses and throat and would include infections like the common cold and a sinus infection. Lower respiratory tract infections affect the airways and ...
The tract is divided into an upper and a lower respiratory tract. The upper tract includes the nose, nasal cavities, sinuses, pharynx and the part of the larynx above the vocal folds. The lower tract (Fig. 2.) includes the lower part of the larynx, the trachea, bronchi, bronchioles and the alveoli.
Air enters the upper respiratory tract through the nose. The nasal conchae can be seen in this image. The nose is the first organ of the upper respiratory tract in the respiratory system. Its main respiratory function is the supply and conditioning, by warming, moisturising and filtering of particulates of inhaled air. [23]
Human respiratory syncytial virus (HRSV) is the most known orthopneumovirus because of its direct correlation and importance in humans. RSV is the leading viral agent among pneumoviruses in pediatric upper respiratory diseases globally. New pneumoviruses have been discovered in the Netherlands among 28 children according to studies.
Francis was admitted to the Gemelli hospital in a “fair” condition on Friday after a weeklong bout of bronchitis worsened. On Monday, medical personnel determined that he was suffering from a polymicrobial respiratory tract infection, meaning a mix of viruses, bacteria and possibly other organisms had colonized in his respiratory tract.