upper respiratory tract(noun)

the nose and throat and trachea

upper respiratory tract(Noun)

The part of respiratory tract consisting of nose, oral cavity, pharynx and larynx.

upper respiratory tract(Noun)

The part of respiratory tract consisting of nose, oral cavity, pharynx, larynx and trachea.

Upper respiratory tract

The upper respiratory tract or upper airway primarily refers to the parts of the respiratory system lying outside of the thorax or above the sternal angle. Another definition commomly used in medicine is the airway above the glottis or vocal cords. Some specify that the glottis is the defining line between the upper and lower respiratory tracts; yet even others make the line at the cricoid cartilage. Upper respiratory tract infections are among the most common infections in the world.