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Functions of the Upper Airway Video

ACLS Certification Association videos have been peer-reviewed for medical accuracy by the ACA medical review board.

Video at a Glance

  • Most of the upper airway is formed of ciliated pseudostratified columnar epithelium (PCE), a tissue unique to the respiratory tract’s mucous membranes.
  • The only parts of the upper airways that aren’t comprised of PCE are the oropharynx and laryngopharynx since these areas are composed of stratified squamous epithelium.
  • The nasopharynx, trachea, and bronchi all the way down to the distal bronchi have the same ciliated PCE.
  • A mucus blanket covers every portion of the upper airway.
  • The upper airway traps foreign bodies, fights infections, and moistens and warms the air as it’s breathed in.

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ACLS Certification Association (ACA) uses only high-quality medical resources and peer-reviewed studies to support the facts within our articles. Explore our editorial process to learn how our content reflects clinical accuracy and the latest best practices in medicine. As an ACA Authorized Training Center, all content is reviewed for medical accuracy by the ACA Medical Review Board.

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