Dependence of activity of cholinergic mechanisms of the heart on the state of its sympathetic innervation and noradrenalin content in hypoxia

1979 ◽  
Vol 87 (6) ◽  
pp. 542-544 ◽  
Author(s):  
N. K. Khitrov ◽  
A. I. Svistukhin ◽  
E. B. Tezikov
Keyword(s):  
Sympathetic Innervation ◽  
The State ◽  
Cholinergic Mechanisms ◽  
Noradrenalin Content

scholarly journals The sympathetic innervation of the vagina

1922 ◽  
Vol 94 (659) ◽  
pp. 197-203 ◽  
Keyword(s):  
Sympathetic Innervation ◽  
The State ◽  
The Third ◽  
Rami Communicantes ◽  
And Function ◽  
Generative Organs

The main facts in regard to the origin, course, and function of the nerves to the internal generative organs, were established by Langley and Anderson (1). They found that, in the cat and rabbit, efferent fibres to the uterus and vagina come from the third, fourth, and fifth lumbar nerves, “run by the white rami communicantes to the sympathetic, and nearly all of them run then to the inferior mesenteric ganglia. From the inferior mesenteric ganglia they proceed by the hypogastric nerves. The efferent fibres are motor to the muscular walls. The effect on the uterus and vagina is more constant in the rabbit than in the cat, though in both it varies with the state of the uterus with regard to parturition. In the cat, pallor of the uterus, with little or no contraction, is not infrequently seen.” “In no part of their course have the lumbar nerves, in our experiments, shown any inhibitory or vaso-dilator action on the uterus or vagina.”

Practical Picture Processing

1974 ◽  
Vol 32 ◽  
pp. 338-339
Author(s):  
T. A. Welton
Keyword(s):  
Radiation Damage ◽  
Coherence Length ◽  
Spatial Information ◽  
State Of The Art ◽  
Coherent Radiation ◽  
The State ◽  
Energy Spread ◽  
Electron Micrograph ◽  
Picture Processing ◽  
Molecular Skeleton

Various authors have emphasized the spatial information resident in an electron micrograph taken with adequately coherent radiation. In view of the completion of at least one such instrument, this opportunity is taken to summarize the state of the art of processing such micrographs. We use the usual symbols for the aberration coefficients, and supplement these with £ and 6 for the transverse coherence length and the fractional energy spread respectively. He also assume a weak, biologically interesting sample, with principal interest lying in the molecular skeleton remaining after obvious hydrogen loss and other radiation damage has occurred.

An ultrastructural analysis of the sympathetic innervation of the rabbit ear artery and middle cerebral artery and their branches

1992 ◽  
Vol 50 (1) ◽  
pp. 934-935
Author(s):  
John T. Dodge ◽  
John A. Bevan
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Sympathetic Innervation ◽  
Electrical Field Stimulation ◽  
Rabbit Ear Artery ◽  
Electrical Field ◽  
Functional Differences ◽  
Ear Artery ◽  
Rabbit Ear ◽  
Vascular Beds

Unlike many peripheral vascular beds, the sympathetic nervous system exerts little control on cerebral blood flow. The contractile response of isolated rabbit middle cerebral artery (MCA) segments to electrical field stimulation of its intramural nerves is less than in a similar-sized artery from the ear. This study was undertaken to characterize and compare the perivascular neuromuscular relationships and innervation density of similar-sized arteries varying in diameter from these two different regional arterial beds to see if there were structural correlates for these functional differences.

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