The alveoli
The actual sites of gas exchange within the lungs are the alvioli.
The exchange of gases between blood and air occurs in the alveoli of the lungs. Oxygen from the air diffuses into the bloodstream, while carbon dioxide from the blood diffuses into the air in the alveoli to be exhaled.
The alveoli are where the actual exchange takes place.
False
alveolus
The actual air exchange in the lungs takes place in the alveoli, which are tiny sacs at the end of the bronchioles. Oxygen from the inhaled air passes through the walls of the alveoli and into the bloodstream, while carbon dioxide moves from the blood into the alveoli to be exhaled.
Lungs do not pump blood. They are the site of gas exchange between capillaries and alveoli.
Oxygen exchange between alveoli and blood capillaries in the lungs
The pulmonary artery is the main artery that carries blood to your lungs.
Looks like a bubble in the lungs; its function is to exchange gasses between the air inhaled and the blood flowing through the lungs. (Mostly oxygen into blood and CO2 out of the blood.)
Gas exchange between the air and the blood occurs in the alveoli of the lungs. The alveoli are tiny air sacs where oxygen from the air diffuses into the blood and carbon dioxide from the blood diffuses into the air to be exhaled.
The capillary is the smallest of the blood vessels. It is the site of gas exchange between the blood and the tissues.