Anatomical Dead Air Space is Most Associated with Which Structure

Question

Anatomical dead air space is most associated with which structure?
A) Frontal sinus
B) Alveoli
C) Trachea
D) Esophagus

Accepted Answer

Anatomical dead air space refers to the portion of the respiratory system that does not participate in gas exchange, and instead contains only air that is breathed in and out without being absorbed. This includes structures such as the trachea, bronchi, bronchioles, and the larger airways of the lungs. The alveoli, on the other hand, are the primary site of gas exchange in the lungs, and are not considered part of the anatomical dead space. The frontal sinus and esophagus are not part of the respiratory system at all, and do not contribute to dead space.