ISSN:
1432-0878
Keywords:
Pancreas (frog)
;
Intrinsic innervation
;
Monoamines and AChE distribution
;
Ligth, fluorescense
;
Electronmicroscopy
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary The autonomic nervous system in the pancreas of Rana temporaria, R. ridi, bunda, R. esculenta and Hyla arborea was studied with histochemical methods of light: fluorescence, and electron microscopy. These species displayed the following common features: (1) a developed innervation whose topographic distribution was similar to that observed in the mammalian pancreas, (2) a richer nervous supply to the islets of Langerhans than to exocrine tissue, (3) a prevalence of cholinergic over adrenergic innervation in islets and exocrine parenchyma, (4) sporadic Cajal interstitial cell-like cells of a cholinergic nature, (5) in islets, the B-cells were mainly supplied by adrenergic, and the A2-cells by cholinergic nerve endings, (6) the occurrence of biogenic monoamines in B-cells and of acetylcholinesterase (AChE) in B- and A2-cells. These aspects together with observations on the fine structure, nature, and the intimate morpho-functional relationship of nerve terminals with blood vessels, acinar and endocrine cells, are discussed in connection with the findings of other authors.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00307180
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