Interneuronal synapses in the local ganglia of the cat urinary bladder
作者:
Erzsébet Fehér,
J. Vajda,
期刊:
Cells Tissues Organs
(Karger Available online 1979)
卷期:
Volume 104,
issue 3
页码: 340-348
ISSN:1422-6405
年代: 1979
DOI:10.1159/000145081
出版商: S. Karger AG
关键词: Urinary bladder;Cat;Autonomic nervous system
数据来源: Karger
摘要:
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 atypical 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 bl
点击下载:
PDF
(1251KB)
返 回