Answer:
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
The oxygen once after diffusing from the alveoli into the capillary stores in the blood.
The movement of oxygen takes place across the paper-thin walls within the air sacs or the alveoli to the tiny blood vessels known as capillaries. This oxygen finally gets store within the blood. The hemoglobin present within the red blood cells then mediates the oxygen all over the body.
On the other hand, the carbon dioxide dissolved in the blood comes out of the capillaries back into the air sacs, and get breathe out. The blood containing fresh oxygen is mediated from the lungs to the heart's left side and get pumped around the body via the arteries.
Thus, oxygen is stored in the blood once it get diffused from the alveoli into the capillary.
Find out more information about the exchange of gases here:
https://brainly.com/question/18837652
