Respuesta :
Answer
alveoli
Explanation
During gas exchange oxygen moves from the lungs to the bloodstream. ... This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.
Required Answer :-
The exchange of gases takes place in the alveoli.
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Additional information :-
- Alveoli are microscopic air sacs.
- They are the primary sites of exchange of gases. Gas exchange also occurs in lungs and tissues by diffusion.
- Atmospheric air contains little CO2, but blood flowing in pulmonary capillaries has a higher concentration of CO2.
- CO2 diffuses from higher concentration in blood across walls of alveolar capillaries to lower concentration in air in alveoli.
- Blood coming into pulmonary capillaries is oxygen poor and alveolar air is oxygen rich.
- Oxygen diffuses from higher concentration in alveoli across walls of alveolar capillaries to lower concentration in blood.
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Hope it's helps !!