Stereology of axon terminals. A study based on reconstruction and goniometrical analysis of semi thin electron histochemical sections

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Abstract

Fluoride resistant acid phosphatase (FRAP) positive axon terminals in the Rolando substance and the Golgi related endoplasmic reticulum (GERL) of substantia gelatinosa cells were studied in semi thin (0.25 to 1.00 μm) electron histochemical sections, using goniometrical analysis and model reconstructions. GERL consists of sheet like hexagonal arrays extending in various directions from a central cistern. FRAP positive terminals deriving from nociceptive dorsal root fibres constitute neuronal chains, proceeding in the rostro caudal direction; axonal dilatations (dense sinusoids) are interconnected by filamentous pedicular stalks. The three dimensional structure of the axonal dilatations and that of the axonal chains are suited for irradiation and integration of neural impulses. The functional organization of the Rolando substance is specified for distribution of nociceptive impulses in a wide area of the spinal cord, to be subjected to evaluation by somatotopically precise information provided by thick dorsal root fibres.

Original languageEnglish
Pages (from-to)33-47
Number of pages15
JournalActa biologica Academiae Scientiarum Hungaricae
Volume25
Issue number1-2
Publication statusPublished - Dec 1 1974

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

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