Rajiv Gandhi University of Health Sciences Karnataka

Infection of the respiratory tract are described according to the anatomic area of involvement. The upper respiratory tract ,or upper airway consist of the oronasopharynx , the pharynx , the larynx and the upper part of the trachea .The lower respiratory tract consist of the lower trachea, main stem bronchi, segmental bronchi, sub segmental bronchioles, terminal bronchioles and the alveoli. ................
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