parts of the body involved in gas exchange

Question 1

what is alveolar duct connected to

Answer 1

bronchiole

Question 2

body parts involved in gas exchange

alveolar duct
alveolar epithelium
alveolar air space
red blood cell
capillary wall
diffusion of o2 and co2
blood flow

Answer 2

alveolar duct
alveolar epithelium
alveolar air space
red blood cell
capillary wall
diffusion of o2 and co2
blood flow