the blood surround Alveoli in order to gas exchange between the Alveoli and red blood cell.
In the alveoli
The humorus
These are called the alveoli capillaries.
Oxygen passes into the capillaries that surround the alveoli. The thin walls of the capillaries make this diffusion easier.
Alveoli.
The tiny blood vessels that surround the alveoli arecalled alveolar capillaries
It is very important that they cover you alveoli
It diffuses into the blood capillaries surrounding the alveoli.
Oxygen diffuses from the alveoli into the capillaries, where it binds to hemoglobin in red blood cells for transport to tissues. Carbon dioxide diffuses from the capillaries into the alveoli and is exhaled from the body.
Alveoli
Alveoli