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The walls of alveoli are thin to allow the exchange of gases (Co2 and O2) between blood capillaries and the aveoli in the lungs.
Wiki User
∙ 13y ago
Anonymous
Wiki User
∙ 13y agoTo help with diffusion of materials through the body
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Why do capillaries have such thin walls?
Capillaries have thin walls to optimise the level of diffusion of oxygen and other nutrients in the blood stream to the surrounding cells.
Where does gas exchange occur?
gas exchange occurs between the thin walls of the alveoli and the thin walls of the capillaries
Why are capillaries the site of material exchange between the cells and blood?
The walls of capillaries are very thin allowing the nutrients of cells to diffuse through them. They facilitate the diffusion of nutrients to the body by passing them through their cell walls.
Why capillaries have a single layer of epithelial cells?
it is because for the diffusion of water and oxygen molecules
Which part of the body has thin walls to allow oxygen to pass through?
Capillaries
Which part of the body has thin walls that allow oxygen to pass through?
Capillaries
Oxygen passes into the capillaries that surround these sac?
Oxygen passes into the capillaries that surround the alveoli. The thin walls of the capillaries make this diffusion easier.
What blood vessels surround the aveoli?
Capillaries The smallest of the blood vessels: capillaries.
Oxygen and nutrients pass from the blood to the bodys tissues through the thin walls of the?
Capillaries
What are alveoli surrounded by?
the blood surround Alveoli in order to gas exchange between the Alveoli and red blood cell.
True or false Capillaries have thin walls containing only one layer of cells?
true
How thick are the walls of capillaries compared to those of arteries and veins?
Arteries and veins have much thicker walls compared to capillaries. The largest arteries and veins have walls up to 5 mm thick, while capillaries have walls that are only one cell layer thick.
