CHAPTER 3
Epithelium and Glands
29
Figure 3-1A.
Overview of types of simple epithelia (one layer of epithelial cells).
Squamous
epithelium
(keratinized)
Squamous
epithelium
(nonkeratinized)
Cuboidal
epithelium
Columnar
epithelium
Transitional
epithelium
(relaxed)
B
D. Cui
Squamous
epithelium
Cuboidal
epithelium
Columnar
epithelium
Pseudostratified
columnar epithelium
A
TABLE 3-1
Classif cation oF Epithelium
Shape oF the SurFace
Cells
Simple Epithelium
(Single Cell Layer)
Stratif ed Epithelium
(Multiple Cell Layers)
Flat
Simple squamous epithelium
Stratif ed squamous epithelium (keratinized)
Stratif ed squamous epithelium (nonkeratinized)
Cuboidal
Simple cuboidal epithelium
Stratif ed cuboidal epithelium
Columnar
Simple columnar epithelium
Pseudostratif ed columnar epithelium
Stratif ed columnar epithelium
From dome to fl at
Transitional epithelium (relaxed)
Transitional epithelium (distended)
Figure 3-1B.
Overview of types of
strati± ed epithelia (two or more layers of epithelial cells).
Epithelium
can be classif
ed as
simple
or
strati± ed
based on the number o± layers o± cells. Epithelium is also classif
ed according to
the shape o± the cells in the most superf
cial layer (Table 3-1).
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