ISSN:
1432-1106
Keywords:
Cobalt labeling
;
Axo-axonic synapses
;
Presynaptic dendrites
;
Spinal cord
;
Frog
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Summary Dorsal root fibers were labeled with cobaltous chloride iontophoresis for electron microscopic investigations. In the base of the dorsal horn, where most of the coarser collaterals of dorsal root fibers terminate, many dorsal root terminals were found in postsynaptic relation to synapsing profiles. According to their morphological characteristics, three kinds of presynaptic terminals could be discerned in these complex synapses: axon terminals with spheric vesicles, axon terminals with flattered vesicles and presynaptic dendrites. These latter terminals contained relatively few flattened vesicles accumulated adjacent to a short synaptic articulation surface, and they were rich in cytoplasmic organelles. The functional significance of these structural specializations in the mediation of dorsal root potentials and recurrent inhibition is discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00236190
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