The exchange of gases between the lungs and the blood is called ________.

A) pulmonary ventilation
B) external respiration
C) internal respiration
D) none of the above

External Respiration

The exchange of gases (oxygen and carbon dioxide) between the atmosphere and the blood through the lung alveoli.

Pulmonary Ventilation

The process of moving air in and out of the lungs to facilitate gas exchange with the internal environment, mainly by bringing in oxygen and flushing out carbon dioxide.

Internal Respiration

The exchange of gases (oxygen and carbon dioxide) between the blood and the body cells, facilitating cellular metabolism.