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airway

airway (ar´wa)

1. Any part of the respiratory tract through which air passes during breathing. 2. In anesthesia or resuscitation, a device for correcting obstruction to breathing, especially an oropharyngeal and nasopharyngeal a., endotracheal a., or tracheotomy tube.
anatomical a. anatomical dead space
conducting a. the a. from the nasal cavity to a terminal bronchiole.
lower a. the portion of the respiratory tract that extends from the subglottis to and including the terminal bronchioles.
respiratory a. that part of the a. where interchange of gases occurs; it includes respiratory bronchioles, alveolar ducts, sacs, and alveoli.
upper a. the portion of the respiratory tract that extends from the nares or mouth to and including the larynx.

 

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