The gas exchange of oxygen to the bloodstream takes place in what part of the respiratory system?
(1 point)
Responses
pharynx
pharynx
bronchiole
bronchiole
alveoli
alveoli
trachea
1 answer
alveoli
(1 point)
Responses
pharynx
pharynx
bronchiole
bronchiole
alveoli
alveoli
trachea
1 answer