Anatomical dead space

Definition

Anatomical dead space is the portion of the airways that does not participate in gas exchange because it only transports air to the regions where gas exchange occurs, such as the alveoli. It includes structures like the nose, pharynx, larynx, trachea, and bronchi.

Related terms

Alveoli:

Tiny sac-like structures in the lungs where gas exchange between the air and blood takes place.

Gas Exchange:

The process by which oxygen is taken into the body and carbon dioxide is expelled, occurring primarily in the alveoli.

Trachea:

A large tube reinforced by rings of cartilage, extending from the larynx to the bronchial tubes and conveying air to and from the lungs; part of both respiratory and anatomical dead space