Alveoli are tiny sacs of air located in your lungs. There are millions of them in your lungs, and they fill up with oxygen when you inhale. They greatly increase the surface area of the lungs so that more oxygen can enter your bloodstream.
Alveoli
tiny little sacs in lungs
the alveoli
the alveoli
Alveoli are very tiny air sacs found in the lungs where CO2 and O2 are changed.
The alveoli are small sacs within the lungs where gas exchange occurs. They are located at the ends of bronchiole branches.
They're located at the end of the bronchioles which are connected to the bronchi
alveoli, which are tiny air sacs located in the lungs where oxygen and carbon dioxide exchange occurs.
True
Alveoli
They absorb so much oxygen because of the Alveoli. An Alveoli are the endings of small tubes that are located in your lungs and transfer oxygen to your capillaries.
Gas exchange between oxygen and carbon dioxide takes place in small sacs called alveoli, which are located at the end of the respiratory bronchioles in the lungs. This is where oxygen from the air is transferred into the bloodstream and carbon dioxide is removed from the blood.