From the inside of the lungs, what is the first cell type the air must pass through to reach the blood?
A) simple squamous epithelium
B) cartilage
C) muscle
D) red blood cells
E) pseudostratified ciliated columnar epithelium

Question

Quizplus · Accepted Answer

The first cell type air encounters from the inside of the lungs on its way to the blood is the simple squamous epithelium, which makes up the alveoli where gas exchange occurs.

From the Inside of the Lungs, What Is the First