Question

To produce the highest possible oxygen concentration in the blood, gas exchange occurs in

only one direction at the respiratory membrane-from the lung to the blood.
O True
O False

Answer 1

True

Step-by-step explanation:

Answer 2

false

Step-by-step explanation:

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.