probably oxygen
probably oxygen
as it moves through blood vessels capillaries in the alveoli walls, your blood takes oxygen from the alveoli and gives off carbon dioxide to the alveoli
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.
Oxygen moves into the lungs to the alveoli in the lungs into capillaries into pulmonary veins to the heart then to arteries that go through the rest of the body.
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.