the thin-walled sacs in the lungs are the alveoli. they are tiny are sacks in your lungs.
Alveolar sac and alveoli
Pleura
alveoli
No, pericarditis is inflammation of the sac surrounding the heart. Pneumonitis is inflammation of the lungs.
there are millions of air sacs in your lungs
They are called alveoli.
Alveola sac
capillaries
I Think You Thinking Of The Alveoli/Alveoli's
it's called, your face.
Alveoli which are in your lungs
alveoli