63.8 MB (4.7 MB compressed)
4250 x 5250 pixels
36.1 x 44.5 cm ⏐ 14.2 x 17.5 in (300dpi)
ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Alveoli. Illustration of alveoli in the lung showing tiny air tubes (bronchioles) leading to groups of balloon-like sacs called alveoli. It is in each alveolus that gaseous exchange takes place during breathing (respiration).
Model release not required. Property release not required.