Tiny air sacs through which the exchange of oxygen and carbon dioxide takes place are called:
A) alveoli.
B) bronchi.
C) bronchioles.
D) emboli.

Question

Quizplus · Accepted Answer

The tiny air sacs through which the exchange of oxygen and carbon dioxide takes place are called alveoli. Bronchi and bronchioles are parts of the respiratory system but they do not perform the function of gas exchange. Emboli are blood clots that can travel through blood vessels and cause blockages.

Tiny Air Sacs Through Which the Exchange of Oxygen and Carbon