EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

The modular construction of the neuropil in the substantia gelatinosa of the cat spinal cord a computer aided analysis of golgi specimens


Acta Morphologica Academiae Scientiarum Hungaricae 29(1): 1-18
The modular construction of the neuropil in the substantia gelatinosa of the cat spinal cord a computer aided analysis of golgi specimens
Golgi impregnated spinal cord sections cut in the sagittal plane were used to study the branching pattern, terminal structure and orientation features of terminal axon arborizations in the substantia gelatinosa (lamina II) of the cat. The histological description of the aborizations was supplemented with computer aided quantitative 3-dimensional analysis. Six types of axon arborizations could be distinguished among the 31 arborizations collected from C[cervical]4 and L[lumbar]4 spinal segments. One type was tentatively identified as terminals of non-myelinated primary afferent fibers (class I arborizations), while the others (class II arborizations) were suggested to belong to thin myelinated primary afferent fibers, to descending tract fibers and to spinal interneurons. Arborizations differed in branching pattern and in the thickness of the branches. They possessed several terminal and en passant thickenings (up to 75) which were interpreted as presynaptic sites. The arborizations were confined to long and narrow sagittal sheets of the neuropil. These sheets were tilted from the sagittal plane but their rostro-caudal axis lined up exactly parallel to the axis of the spinal cord. The dimensions of the elongated brick-shaped territories encompassing the presynaptic sites of the arborizations were measured. The average values of 10 class I trees were 526 .mu. in length, 53 .mu. in dorso-ventral direction and 17 .mu.m in width (medio-lateral dimension). Class II trees were generally shorter but wider. Trees were found occasionally to arborize in 2 adjacent in 2 adjacent sheets. Arborizations with partially or totally overlapping branches were frequently seen.


Accession: 006719661

PMID: 7304272



Related references

The modular construction of the neuropil in the substantia gelatinosa of the cat's spinal cord. A computer aided analysis of Golgi specimens. Acta Morphologica Academiae Scientiarum Hungaricae 29(1): 1-18, 1981

Compartmentalization of the substantia gelatinosa neuropil in the spinal cord of the cat. Neuroscience Letters SUPPL(1): S103, 1978

Identification of the neurons which contribute to the neuropil of the substantia gelatinosa layer of the spinal trigeminal nucleus in the adult cat a golgi study. Anatomical Record: 497, 1974

Identification of presumptive long axon neurons in the substantia gelatinosa of the rat lumbosacral spinal cord: a Golgi study. Neuroscience Letters 41(1-2): 9-14, 1983

A computer-aided analysis of the effect of peripheral nerve transection on TMPase activity of substantia gelatinosa Rolandi. Zeitschrift für Mikroskopisch-Anatomische Forschung 100(3): 428-432, 1986

A computer aided analysis of the effect of peripheral nerve transection on thiamin monophosphatase activity of substantia gelatinosa rolandi. Zeitschrift fuer Mikroskopisch-Anatomische Forschung (Leipzig) 100(3): 428-432, 1986

Statistical analysis of ongoing activity of neurons in the substantia gelatinosa and in lamina iii of cat spinal cord. Quarterly Journal of Experimental Physiology & Cognate Medical Sciences 68(4): 733-746, 1983

Statistical analysis of ongoing activity of neurones in the substantia gelatinosa and in lamina III of cat spinal cord. Quarterly Journal of Experimental Physiology 68(4): 733-746, 1983

Patch clamp analysis of serotonin effect of nociceptive transmission in substantia gelatinosa of the rat spinal cord. Neuroscience Research Supplement (16): S22, 1991

Effects of tramadol on substantia gelatinosa neurons in the rat spinal cord: an in vivo patch-clamp analysis. Plos One 10(5): E0125147-E0125147, 2016