gaseous exchange Flashcards
1
Q
what are features of the alveoli that assist in gaseous exchange
A
the alveoli are one cell thick which allows diffusion of gases such as oxygen and
carbon dioxide to transfer to and from the capillaries.
The gases will diffuse from areas of high concentration to areas of low concentration.
large surface area
2
Q
how does gas exchange happen
A
The alveoli are surrounded by capillaries so oxygen and carbon dioxide diffuse between the air in the alveoli and the blood in the capillaries. Diffusion is the movement of gas from an area of high concentration to an area of low concentration
