Question

What is the pathway for co2 in our respiratory system?​

Answer 1

Carbon dioxide (CO2) is a waste product of cellular metabolism. You get rid of it when you breathe out (exhale). This gas is transported in the opposite direction to oxygen: It passes from the bloodstream – across the lining of the air sacs – into the lungs and out into the open.

Answer 2

alveoli

Step-by-step explanation:

because carbon dioxide moves from the blood in the capillaries to the air in the alveoli