i dont know??????????
one feature is that an alveoli has a wide surface area. If you know any other features then add them!
The respiratory system
to be honest i don't know and i could care less :)
Alveoli alveoli - air sacs in your lungs
Alveoli
That is correct. Alveoli only contain only two types of cells: Type I cells that are like thin sheets and make up the actually wall of the alveoli, and Type II cells that secrete a substance called surfactant that helps to hold the alveoli open. There can also be some macrophages present in the alveoli to destroy invading bacteria.
The humorus
In the alveoli (also called air sac) is the capillary-rich sac in the lungs where the exchange of oxygen and carbon dioxide takes place by diffusion. The oxygen poor blood goes from the right ventricle and into the lungs where the co2 is traded for Oxygen in the alveoli and back through the heart and out to the body.
the alveoli is happen the blood
alveoli take co2 from
Oxygen and carbon dioxide are exchanged in the alveoli. Oxygen is taken up from inhaled air into the bloodstream, while carbon dioxide is released from the bloodstream into the alveoli to be exhaled.