They are called alveoli.
the thin-walled sacs in the lungs are the alveoli. they are tiny are sacks in your lungs.
the thin-walled sacs in the lungs are the alveoli. they are tiny are sacks in your lungs.
the thin-walled sacs in the lungs are the alveoli. they are tiny are sacks in your lungs.
A tiny, thin-walled, capillary-rich sac in the lungs where the exchange of oxygen and carbon dioxide takes place.
Butt
They are called alveoli.
They are called alveoli.
When blood is pumped into the thin-walled blood vessels of the lungs, carbon dioxide is replaced with oxygen.
When blood is pumped into the thin-walled blood vessels of the lungs, carbon dioxide is replaced with oxygen.
Alveoli
trachea
An alveolus is a single air-sac, and alveoli are multiple air-sacs.