Which Type of Epithelial Tissue Lines the Air Sacs and Permits

Question

Which type of epithelial tissue lines the air sacs and permits the exchange of gases?
A) squamous epithelium
B) columnar epithelium
C) pseudostratified columnar epithelium
D) cuboidal epithelium
E) stratified cuboidal epithelium

Accepted Answer

Squamous epithelium is the thinnest type of epithelial tissue, composed of a single layer of flattened cells. This thinness allows for easier exchange of gases such as oxygen and carbon dioxide, which is necessary in the air sacs (alveoli) of the lungs.