Total pressure

Definition

Total pressure in the context of the respiratory system refers to the sum of all partial pressures of gases (primarily oxygen and carbon dioxide) within a mixture, like inhaled air. It is crucial for understanding how gases exchange between the bloodstream and lungs.

Related terms

Partial Pressure:

The pressure exerted by an individual gas within a mixture of gases.

Gas Exchange:

The process by which oxygen is transported to cells and carbon dioxide is carried away from cells, primarily occurring in the alveoli of the lungs.

Alveoli:

Tiny air sacs in the lungs where gas exchange between the air and blood takes place