Interneuronal synapses in the local ganglia of the cat urinary bladder

E. Fehér, J. Vajda

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The interneuronal synapses of the urinary bladder in the cat were studied by electron microscopy. The great majority of the fibres containing vesicles are found within the ganglia occurring in the trigonum area. Morphologically differentiated synaptic contacts could be observed on the surface of the local neurons and between the different nerve processes. The pre-synaptic terminals can be divided into three types based on a combination of synaptic vesicles. Type I terminals, presumably cholinergic synaptic terminals, contain only small clear vesicles of 40-50 nm in diameter. Type II terminals, presumably adrenergic terminals, are characterized by small granulated vesicles of 40-60 nm in diameter. Type III terminals, probably of local origin, contain a variable number of large granulated vesicles of 80-140 nm in diameter. Occasionally, a single nerve fibre contacted several (two or four) other nerve processes forming a typical synapse. In other cases, on one nerve cell soma or on other nerve processes there are two or three different-type nerve terminals establishing synapses. It might be inferred from these observations that convergence and divergence can occur in the local ganglia and that cholinergic and adrenergic synaptic terminals can modulate the ganglionic activity. However, a local circuit also can play an important role in coordinating the function of the bladder.

Original languageEnglish
Pages (from-to)340-348
Number of pages9
JournalActa Anatomica
Volume104
Issue number3
Publication statusPublished - 1979

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Presynaptic Terminals
Ganglia
Synapses
Urinary Bladder
Cats
Adrenergic Agents
Cholinergic Agents
Neurons
Synaptic Vesicles
Carisoprodol
Nerve Fibers
Electron Microscopy

ASJC Scopus subject areas

  • Anatomy

Cite this

Interneuronal synapses in the local ganglia of the cat urinary bladder. / Fehér, E.; Vajda, J.

In: Acta Anatomica, Vol. 104, No. 3, 1979, p. 340-348.

Research output: Contribution to journalArticle

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