The alveoli branch from the bronchioles and are responsible for gas exchange with the pulmonary capillaries. They come in close contanct with the capillaries so the exchange of O2 and Co2 can occur rapidly and easily.
Alveoli and capillaries are both the thinnest parts of their systems. They are both one cell thick. Gas exchange takes place in both of them.
capilaries:tiny blood vesels that are microscopic alveoli:air sacks in the lungs that abosrb O2
These are called alveolar capillaries.
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.
alveoli
Alveoli
Alveoli