Page 73 - Veterinary Histology of Domestic Mammals and Birds, 5th Edition
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Epithelial tissue (textus epithelialis) 55
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2.35 Apocrine secretion in a sweat gland, skin (pig). The cell surface bulges into the lumen of the tubular gland
and the plasmalemma constricts around the secretory granule and adjacent cytoplasm, eventually separating
both from the cell surface. Apocrine sweat glands produce scents used in communication. Haematoxylin and
eosin stain (x480).
2.36 Apocrine secretion by columnar epithelial cells, epididymal duct (bull). Secretion occurs by vesicular
constriction of the plasmalemma around the secretory product and adjacent cytoplasm. Goldner’s Masson
trichrome stain (x720).
2.37 Merocrine mode of secretion (schematic). The 2.38 Apocrine mode of secretion (schematic). The
secretion is discharged at the cell surface. secretion is surrounded by plasmalemma.
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