Breathing and Exchange of Gases Question 16
16. The alveolar epithelium in the lungs is
[1990]
(a) nonciliated columnar
(b) nonciliated squamous
(c) ciliated columnar
(d) ciliated squamous
Show Answer
Answer : b
Hints & Solution
(b) The very thin alveolar wall (about 0.0001 $mm$ ) is composed of moist, non-ciliated, squamous epithelial cells.