Question

respiratory system functions
what are the primary functions of the respiratory system? select all that apply.
warm and filter the air
circulating oxygen throughout the body
absorbing oxygen
expelling carbon monoxide
expelling carbon dioxide

Explanation:

The respiratory system warms and filters the air we inhale, absorbs oxygen from the air into the bloodstream, and expels carbon - dioxide (a waste product of cellular respiration). The circulatory system is responsible for circulating oxygen throughout the body, and the respiratory system does not expel carbon monoxide as a primary function.

Answer:

A. Warm and filter the air
C. Absorbing oxygen
E. Expelling carbon dioxide