Inferior Hypogastric Nerve Plexus

2020 ◽  
Author(s):  
Keyword(s):  
Nerve Plexus ◽  
Hypogastric Nerve

The accumulation of noradrenaline in constricted sympathetic nerves as studied by fluorescence and electron microscopy

1967 ◽  
Vol 167 (1008) ◽  
pp. 282-292 ◽  
Keyword(s):  
Sympathetic Nerves ◽  
Close Correlation ◽  
Electron Microscopic ◽  
Hypogastric Nerve ◽  
Fluorescent Material ◽  
Dense Cores ◽  
Fluorescence And Electron Microscopy ◽  
Granular Vesicles ◽  
Electron Dense Core ◽  
Microscopic Findings

The effects of constricting post-ganglionic sympathetic nerves have been studied in the cat splenic nerve and guinea-pig hypogastric nerve. The results obtained using a fluorescence method for the histochemical localization of noradrenaline have been compared with electron microscopic findings. A close correlation was found between the accumulation of fluorescent material, attributable to noradrenaline, and of vesicles with an electron dense core (granular vesicles) believed to contain noradrenaline, proximal to the constriction in these nerves. This accumulation of noradrenaline was visible by 1 h after operation and increased rapidly in amount during the succeeding hours. It apparently reached a maximum after approximately 2 days and was found in what appeared to be newly formed axons 3 to 4 days after operation. Reserpine reduces the fluorescence and the number of vesicles with electron dense cores which accumulate proximal to the constriction. It is suggested, (1) that the fluorescent material is due, at least in part, to the presence of the granular vesicles, and (2) that the constriction has blocked the normal proximo-distal movement of noradrenaline which is believed to occur in post-ganglionic sympathetic axons.

Ultrastructure of nerve plexus in flatworms

1975 ◽  
Vol 157 (2) ◽  
Author(s):  
Harold Koopowitz ◽  
Paul Chien
Keyword(s):  
Nerve Plexus

Sympathetic innervation of guinea pig uterus and ovary

1976 ◽  
Vol 230 (5) ◽  
pp. 1400-1405 ◽  
Author(s):  
PS Kulkarni ◽  
AR Wakade ◽  
SM Kirpekar
Keyword(s):  
Guinea Pig ◽  
Guinea Pigs ◽  
Sympathetic Innervation ◽  
Hypogastric Nerve ◽  
Relative Contribution ◽  
Hypogastric Plexus ◽  
A Minor ◽  
Ovarian Nerves ◽  
Adrenergic Fibers

The relative contribution of the ovarian nerves and hypogastric plexus in the innervation of the guinea pig uterus and ovary was assessed. Chronic section of the hypogastric nerve did not reduce norepinephrine (NE) concentration in either organ. Localization of the hypogastric plexus in female guinea pigs was unsuccessful. Crushing the ovarian nerves 1) lowered the NE concentration in the ovary (70%) and in all portions of the uterus (86%), 2) decreased by 80-90% the uterine retention of [3H]NE, and 3) decreased the intensity of fluorescent adrenergic fibers in the uterus. However, the denervated uterus failed to exhibit supersensitivity to NE. In conclusion, sympathetic innervation of the guinea pig uterus and ovary is predominantly via the ovarian nerves, and a minor pathway of innervation may come from hypogastric plexus.

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