WORKSHOP IN HISTOLOGY, CYTOLOGY AND EMBRYOLOGY - 2016

Chapter 5. SPECIAL HISTOLOGY

Endocrine System

Slide 91. Pineal Gland.

Staining: hematoxylin and eosin.

Magnification: x400.

The Pineal Gland is covered by the pia mater, from which Connective Tissue septa (1) extend into the gland, dividing it into lobules (2). The latter contain two Cell types: pinealocytes, localized mainly in the central regions (they are relatively large, polygonal in shape, with branched processes), and gliocytes, which belong to astrocytic Glia and are located in the peripheral Regions of the lobules.

Occasionally, rounded granules of Brain sand (corpora arenacea) (3) can be seen in the slide, representing layered deposits of calcium and magnesium salts.

Class="center">Cytology/practical/practical.files/image099.jpg" width="340"/>

Slide 91. Pineal Gland.



Last update: 07/08/2026

Editorial and Educational Adaptation: This material has been compiled based on the primary/original source text. The project team performed an editorial review, corrected technical inaccuracies, structured sections, and adapted the content for an educational format.

What was processed:

  • elimination of formatting defects (OCR errors, structural breaks, corrupted characters);
  • editorial organization of content;
  • standardization of terminology in accordance with academic sources;
  • verification of factual statements against the original source text.

All mentions of the author, publication year, and origin of the primary text have been preserved in accordance with the source.