How Thick Are The Walls Of Alveoli. The walls of the alveoli, which are only about one cell thick, are the respiratory surface. Learn about their structure and common diseases.
What is alveolus, number, where are the alveoli and how do they work, relationship between alveoli and capillaries, what happens during gas exchange, pictures.
The alveoli are only one cell thick, allowing the relatively easy passage of oxygen and carbon dioxide (co2) between the alveoli and blood vessels. The gases move by diffusion from where they have a high concentration to where they have a low concentration What is meant by the phrase gas exchange? Gas exchange takes place in the alveoli of the lungs.