Airway noise originating in the nose, nasopharynx and oropharynx is known as:
Stridor is a harsh noise produced by turbulent airflow through a paially obstructed airway. It may be inspiratory, expiratory, or both (biphasic). The term steor is used to describe airway noise originating in the nose, nasopharynx, and oropharynx; therefore, stridor is generally of laryngeal or tracheal origin.
Stridor
Steor
Both of the above
None of the above