Upper Respiratory Tract

Upper Respiratory Tract

Author: Nathan Lampson

This lesson will give an overview of the major structures and functions associated with the upper respiratory tract.

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  • Epiglottis

    Covers the larynx during swallowing to prevent food or liquids from entering the lungs.

  • Trachea

    Connects the larynx to the lower respiratory tract (commonly known as the windpipe).

  • Larynx

    The airway in which sound is produced (commonly known as the “voicebox”).

  • Pharynx

    Connects the nasal cavity to the mouth (commonly known as the “throat”).

  • Oral Cavity

    A secondary cavity through which air is drawn in from the outside environment.

  • Nasal Cavity

    The main cavity through which air is drawn in from the outside environment.