Which of the Following is Not Part of the Lower

Question

Which of the following is not part of the lower respiratory system?
A) Alveoli
B) Bronchi
C) Bronchioles
D) Trachea
E) Sinuses

Accepted Answer

The lower respiratory system includes the trachea, bronchi, bronchioles, and alveoli, but not the sinuses, which are part of the upper respiratory system.