External respiration is:
A)the exchange of gases in the alveoli
B)the passage of air through the upper respiratory tract
C)inhalation followed by exhalation
D)only exhalation

Question

Quizplus · Accepted Answer

External respiration specifically refers to the exchange of gases (oxygen and carbon dioxide) in the alveoli of the lungs. It does not refer to the process of inhaling and exhaling air or the passage of air through the upper respiratory tract.

External Respiration Is