The respiratory membrane consists of
A)a single thickness of epithelial cells.
B)a single thickness of epithelial cells and a basement membrane.
C)two thicknesses of epithelial cells.
D)two thicknesses of epithelial cells and basement membranes.

Question

Quizplus · Accepted Answer

The respiratory membrane is composed of two layers of epithelial cells (alveolar and capillary) and their respective basement membranes, which are fused together to facilitate gas exchange.

The Respiratory Membrane Consists of