CHAPTER 3
Epithelium and Glands
53
Figure 3-25A.
A simple branched acinar gland.
The
simple branched acinar gland
has a short,
unbranched duct
(
blue cells
). The
secretory
portions
are
branched acini
. The
heavy black line
represents the approximate plane of the section in
Figure 3-25B.
Figure 3-25B.
Skin.
H&E,
3
78
The sebaceous glands in the skin are good examples of a
simple
branched acinar gland
. The
secretory cells
are arranged in several
acinar units
and open into a short
excretory duct
. The secretory
product,
sebum
, is discharged from the acini through a short duct
into the
hair follicle
.
Figure 3-26A.
A compound tubular gland.
The
compound tubular gland
has
branched
ducts
(
blue cells
). The
secretory portions
are
formed by branched
tubules
. The
heavy black line
represents the approximate plane of the section in
Figure 3-26B.
Figure 3-26B.
Duodenum.
H&E,
3
83
The
Brunner glands
in the duodenum are examples of
compound
tubular glands
. The
mucous secretory cells
are arranged in
tubular
components
. The secretory products exit through branched ducts
into the lumen of the duodenum.
D. Cui
Excretory
duct
Acinar
components
A
Hair
Hair
follicle
follicle
Excretory
Excretory
duct
duct
Acinar
Acinar
components
components
Hair
follicle
Excretory
duct
Acinar
components
B
D. Cui
Excretory
duct
Tubular
components
Branched
duct
A
Secretory tubular
Secretory tubular
portion
portion
Secretory tubular
portion
Brunner
Brunner
glands
glands
Brunner
glands
B
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