54
UNIT 2
Basic Tissues
Figure 3-27A.
A compound acinar gland.
The
compound acinar gland
has
branched ducts
(
blue cells
), and the
secretory units
are
branched
acini
. The
heavy black line
represents the approxi-
mate plane of the section in Figure 3-27B.
Figure 3-27B.
Pancreas.
H&E,
3
812
Exocrine glands of the pancreas are examples of
compound acinar
glands
. The
secretory cells
form numbers of
acinar compounds
, and
the secretory products are evacuated into the duodenum through the
duct system
of the glands.
D. Cui
Excretory
duct
Acinar
compounds
Branched
duct
A
Serous acinar
Serous acinar
cells
cells
Serous acinar
cells
Small
Small
duct
duct
Small
duct
B
Figure 3-28A.
A compound tubuloacinar gland.
The
compound tubuloacinar gland
has
branched
ducts
(
blue cells
) and
branched secretory portions
of
tubular
and
acinar components
. The
heavy black
line
represents the approximate plane of the section
in Figure 3-28B.
D. Cui
Interlobular
duct
Intralobular
duct
Tubular
component
Acinar
component
A
Figure 3-28B.
Submandibular gland.
H&E,
3
436
The submandibular glands and sublingual glands are good examples
of this category. The
acinar components
are made up of
serous cells
;
the
tubular components
are formed by
mucous cells
(see Fig. 3-18C).
There are several levels of excretory ducts, including
intralobular
ducts
and
interlobular ducts
. A
serous demilune
is also visible
Serous
Serous
demilune
demilune
Serous
demilune
Mucous
Mucous
cells
cells
(tubular component)
(tubular component)
Mucous
cells
(tubular component)
Serous
Serous
cells
cells
(acinar component)
(acinar component)
Serous
cells
(acinar component)
B
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