Upper airway

The upper airway (pronounced: /ˈʌpər ˈɛərweɪ/) refers to the portion of the respiratory system that is above the vocal cords. It includes the nose, nasal cavity, mouth, pharynx, and larynx.

Etymology

The term "upper airway" is derived from the English words "upper", meaning higher in position, and "airway", which refers to the part of the body through which air passes during respiration.

Anatomy of the Upper Airway

The upper airway begins at the nose and mouth, which serve as the primary entry and exit points for air during breathing. The air then passes through the nasal cavity, a large, air-filled space above and behind the nose. The pharynx, or throat, is a funnel-shaped tube that connects the nasal and oral cavities to the larynx. The larynx, also known as the voice box, is the last part of the upper airway and is located just above the trachea (windpipe).

Function of the Upper Airway

The upper airway serves several important functions. It warms, humidifies, and filters the air we breathe before it reaches the lungs. It also plays a crucial role in speech and swallowing.

Related Terms

Nose: The part of the face that protrudes and houses the nostrils, which admit and expel air for respiration in conjunction with the mouth.
Nasal cavity: The large, air-filled space above and behind the nose in the middle of the face.
Mouth: The opening through which an animal or person takes in food and breathes.
Pharynx: The membrane-lined cavity behind the nose and mouth, connecting them to the esophagus.
Larynx: The hollow muscular organ forming an air passage to the lungs and holding the vocal cords in humans and other mammals; the voice box.