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Ultrastructural observations on human sublingual gland.

A Riva1, B Tandler, F Testa Riva

  • 1Dipartimento di Citomorfologia, Universitá di Cagliari, Italy.

The American Journal of Anatomy
|April 1, 1988
PubMed
Summary

Electron microscopy revealed the human sublingual gland has more mucous than seromucous elements. Its unique duct system may explain the production of sodium-rich saliva.

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Area of Science:

  • Histology
  • Cell Biology
  • Human Anatomy

Background:

  • The human sublingual gland's morphology is typically described in histology texts.
  • Distinction between major and minor sublingual glands is important for understanding gland function.

Purpose of the Study:

  • To investigate the ultrastructure of the human sublingual gland using electron microscopy.
  • To characterize the mucous and seromucous elements and the duct system.

Main Methods:

  • Electron microscopy was employed to examine the morphology of the human sublingual gland.
  • Ultrastructural analysis focused on mucous cells, seromucous cells, and ductal structures.

Main Results:

  • The human sublingual gland is a mixed gland, predominantly mucous with some seromucous elements.
  • Mucous cells exhibit variations based on secretory cycle stage; seromucous cells show diverse granule substructures, suggesting varied protein synthesis.
  • The gland possesses an abbreviated duct system lacking typical striated ducts, featuring mitochondria-rich cells instead.

Conclusions:

  • The human sublingual gland's composition and abbreviated duct system, particularly the absence of prominent striated ducts, are key features.
  • These morphological characteristics may correlate with the gland's ability to secrete sodium-rich saliva.

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