Functions of the respiratory system include
A) protecting respiratory surfaces from dehydration, temperature changes, or other environmental variations.
B) defending the respiratory system and other tissues from pathogenic invasion.
C) providing an extensive area for gas exchange between air and circulating blood.
D) A and C only
E) all of the above

Question

Quizplus · Accepted Answer

The respiratory system protects surfaces, defends against pathogens, and facilitates gas exchange, covering all options A, B, and C.

Functions of the Respiratory System Include