Question

What is the charecteristics of an alveolus​

Answer 1

• Each alveolus is cup-shaped with very thin walls.
• It’s surrounded by networks of blood vessels called capillaries that also have thin walls.
• The oxygen you breathe in diffuses through the alveoli and the capillaries into the blood.
• The carbon dioxide you breathe out is diffused from the capillaries to the alveoli, up the bronchial tree and out your mouth.
• The alveoli are just one cell in thickness, which allows the gas exchange of respiration to take place rapidly.