Page 79 - Veterinary Histology of Domestic Mammals and Birds, 5th Edition
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Epithelial tissue (textus epithelialis) 61
Table 2.3 Structural elements of exocrine glands.
VetBooks.ir Morphological feature Gland type Examples
Unicellular
Goblet cells
Number of secretory cells
Multicellular Salivary gland
Location of the secretory cells Intra-epithelial glands Goblet cells
with respect to the surface Extra-epithelial glands All large exocrine glands
epithelium
Shape of the secretory unit Tubular Glands of large intestine
Acinar Parotid gland, exocrine pancreas
Alveolar Sebaceous glands
Tubulo-alveolar/tubulo-acinar Sublingual gland
Structure of duct system Single secretory units with a duct Sweat glands
opening onto an epithelial surface
Branched glands with multiple Gastric glands
secretory units that open into an
unbranched duct
Compound glands in which multiple All large salivary glands
secretory units open into a strongly
branched duct system
Mode of secretion Merocrine (eccrine) Most exocrine glands
Apocrine Scent (apocrine sweat) glands,
mammary gland
Holocrine Sebaceous glands
Chemical composition of secretion Serous Parotid gland, exocrine pancreas
Mucous Pyloric glands
Seromucous Sublingual gland, mandibular gland,
glands of the airways
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