300 million per lung
about 3 million
By the lungs and alveoli.
alveoli
the alveoli
There are hundreds of thousands of alveoli.
Alveoli are very tiny air sacs found in the lungs where CO2 and O2 are changed.
the alveoli
The parts of the human respiratory center are the lungs, alveoli and bronchioles.
The alveoli.
Oxygen (O2) is exchanged for carbon dioxide (CO2) in the lungs. In the alveoli, tiny air sacs in the lungs, oxygen from the air is transferred into the bloodstream while carbon dioxide from the blood is released into the air to be exhaled.
There are 3000 Alveoli in a healthy person's lung
3oo million alveoli