they are related to air sacs because they both use specialized epithelial tissue. This tissue is only one cell layer thick.
They are both used for the exchange of gases in the lungs. Oxygen and CO2 are transferred between the alveoli and the capillary beds surrounding them.
they are related to air sacs because they both use specialized epithelial tissue. This tissue is only one cell layer thick.
http://www.daviddarling.info/encyclopedia/R/respiratory_system.html
Capillaries are the blood vessels that surround the alveoli, or air sacs, in your lungs. These capillaries are the site of gas exchange.
the air goes into your lungs. In your lungs there are billions of tiny air sacs. Surrounding each air sac is a network of blood capillaries. The air sacs and the blood capillaries are separated by a thin membrane. Across this membrane the air sacs give the blood capillaries oxygen and they blood capillaries give the air sacs carbon dioxide. We breathe out this carbon dioxide!
Oxygen moves into the capillaries from the air sacs. Carbon dioxide moves out the the capillaries into the air sacs.
Blood capillaries surrounding air sacs called alveoli.
Capillaries.
The lungs bring air into the air sacs, which are tightly wrapped with capillaries. The capillaries exchange oxygen for carbon dioxide, which the lungs expel.
Alveoli.
carbon dioxide
Capillaries . The smallest of the blood vessels: capillaries.
alveoli
capillaries
greater concentration of oxygen in the air sacs of the lungs than in the capillaries.