An adrenergic component of the nervous apparatus of the aortic reflexogenic zone

1974 ◽  
Vol 78 (1) ◽  
pp. 825-828 ◽  
Author(s):  
E. B. Khaisman
Keyword(s):  
Nervous Apparatus ◽  
Reflexogenic Zone

To the pathogenesis of generalized headache

1926 ◽  
Vol 22 (10) ◽  
pp. 1186-1186
Author(s):  
M. S. Margulis
Keyword(s):  
Nervous Apparatus

Generalized headache is a vaso-secretory neurosis that develops on the basis of irritation and deeper changes in the sympathetic and parasympathetic nervous apparatus of the soft cerebral membranes.

The motive and nervous apparatus, and functions.

1873 ◽  
pp. 559-595
Author(s):  
Orson Squire Fowler
Keyword(s):  
Nervous Apparatus

scholarly journals I. On the minute structure of the lung of the newt with especial reference to its nervous apparatus

1881 ◽  
Vol 32 (212-215) ◽  
pp. 37-38 ◽  
Keyword(s):  
Endothelial Cells ◽  
Microscopic Examination ◽  
Areolar Tissue ◽  
Elastic Fibres ◽  
Especial Reference ◽  
Nervous Apparatus

The lungs of the newt and triton are essentially simple sacs without any septa projecting into their interior, so that they are remarkably well suited for microscopic examination. They are covered externally by a layer of endothelium, but there are no stomata to be found between the endothelial cells. Under this is a small quantity of areolar tissue containing a plexus of yellow elastic fibres, with the long axis of the meshes arranged in the long axis of the lung-sac. Under this is a layer of non-striped muscular fibres, which forms a complete investment for the lung. These muscular fibres are disposed circularly. They present the same structure as similar cells in the mesentery of the newt. Each cell contains an intra-nuclear and intra­cellular plexus of fibrils.

scholarly journals Role of indole derivative SS-68 in increasing the frequency range of cardiac rhythm control (reflex stimulation of the sinoatrial node)

2021 ◽  
Vol 7 (3) ◽  
pp. 73-81
Author(s):  
Pavel A. Galenko-Yaroshevsky ◽  
Anatoly A. Nechepurenko ◽  
Tatiana G. Pokrovskaya ◽  
Nikolai L. Shimonovsky ◽  
Alexander S. Dukhanin ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Medulla Oblongata ◽  
High Frequency ◽  
Sinoatrial Node ◽  
Heart Rhythm ◽  
Cardiac Pacing ◽  
High Frequency Electromagnetic Field ◽  
Reflex Stimulation ◽  
Reflexogenic Zone ◽  
Stimulation Of

Introduction: Cardiac pacing is indicated for sick sinus syndrome. It is performed with a pacemaker via electrodes implanted in the heart. This technique has several disadvantages. The search for alternative methods of cardiac pacing is underway. One of them is control of heart rhythm through stimulation of the tragus. Objective: To perform the reflex stimulation of the sinoatrial node and to study the influence of the SS-68 substance on it. Materials and methods: Two electrodes were fixed in the reflexogenic zone of rabbits’ auricles, volleys of electrical impulses from an electrical stimulator were applied to the electrodes, and the synchronization range of volley frequency and cardiac contractions was recorded. This range was re-recorded again after injecting the SS-68 substance (2-phenyl-1-(3-pyrrolidine-1-cyclopropyl)-1H-indole hydrochloride) intravenously at a dose of 50 µg/kg. In other experiments on frogs in a high-frequency electromagnetic field, the process of excitation of the area of the medulla oblongata associated with the heart rhythm was visualized. After the application of SS-68 (50 μM) to the surface of this zone, the process of its excitation was recorded. Results and discussion: Stimulation of the auricular reflexogenic zone of rabbits produced a synchronization of volley frequency and heart rate in the range from 173.5 ± 2.0 to 214.0 ± 1.8 per minute. SS-68 extended this range from 168.2 ± 1.9 to 219.4 ± 1.5 per minute. In the frog’s medulla oblongata, an area synchronous to the heart rhythm glowed in the high-frequency electromagnetic field. SS-68 increased the area of glow by 131.0%. Conclusion: The substance SS-68 increases the frequency range of heart rhythm control by activating reflex stimulation of the sinoatrial node. The main point of application of SS-68 is the medulla oblongata. Glow in the high-frequency electromagnetic field reflects the process of neuron excitation. The increase in the glow zone under the influence of SS-68 indicates synchronously excited neurons, which leads to the assimilation of the central heart rhythm generation by the sinoatrial node.

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