Question

How is oxygen transported from lungs to the other parts of the body?
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Answer 1

The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels. This is known as diffusion. The oxygen in the blood is then carried around the body in the bloodstream, reaching every cell. When oxygen passes into the bloodstream, carbon dioxide leaves it.

Answer 2

Explanation:

Alveoli are the primary sites of exchange of gases. Exchange of gases also occur between blood and tissues. O2 and CO 2 are exchanged in these sites by simple diffusion mainly based on pressure/ concentration gradient. Solubility of the gases as well as the thickness of the membranes involved in diffusion are also some important factors that can affect the rate of diffusion.