'Human lungs have millions of these tiny air sacs, where oxygen & carbon dioxide are exchanged'
Alveoli
ANATOMY: Human lungs have millions of these tiny air sacs, where oxygen & carbon dioxide are exchanged
Human lungs have millions of these tiny air sacs, where oxygen & carbon dioxide are exchanged
Human lungs have millions of these tiny air sacs, where oxygen & carbon dioxide are exchanged
ANATOMY
Alveoli
ANATOMY