The and _ are Part of the Respiratory System

Question

The and _ are part of the respiratory system.
A) bronchi, thymus
B) testes, ovaries
C) alveoli, trachea
D) lungs, esophagus

Accepted Answer

The alveoli are tiny air sacs where gas exchange occurs, and the trachea is a large tube that carries air in and out of the lungs, both essential parts of the respiratory system.