Submandibular gland
The submandibular gland is a compound tubuloacinar gland that produces both mucous and serous secretory product for release into the oral cavity. 800x
Mucous tubules >
Mucus-secreting tubules can be distinguished by their pale staining, frothy appearance. The lumens of these tubules are larger than those of acini, allowing passage of the thicker secretory product the tubules produce.
- Tubule lumens
Mucus-secreting tubules can be distinguished by their pale staining, frothy appearance. The lumens of these tubules are larger than those of acini, allowing passage of the thicker secretory product the tubules produce.
Serous acini >
Serous-secreting acini stain more intensely than do the tubules. Acini resemble grapefruits cut in cross section, with each grapefruit wedge representing an individual cell. Secretory granules fill the apex of each cell, lying adjacent to the acinar lumen into which they will be released. The lumen of each acinus is smaller than that of a tubule.
- Secretory granules
Serous-secreting acini stain more intensely than do the tubules. Acini resemble grapefruits cut in cross section, with each grapefruit wedge representing an individual cell. Secretory granules fill the apex of each cell, lying adjacent to the acinar lumen into which they will be released. The lumen of each acinus is smaller than that of a tubule.
Serous demilunes
Serous-secreting acini stain more intensely than do the tubules. Acini resemble grapefruits cut in cross section, with each grapefruit wedge representing an individual cell. Secretory granules fill the apex of each cell, lying adjacent to the acinar lumen into which they will be released. The lumen of each acinus is smaller than that of a tubule.