Remarks on the results of degeneration of the upper thoracic white rami communicantes, chiefly in relation to commissural fibres in the sympathetic system

In the course of experiments already published on the origin from the spinal cord of the sweat-fibres for the fore-foot, and of the pilo-motor fibres for the face and neck, I had occasion to stimulate, in the spinal canal, the lower cervical and upper thoracic nerves. Whilst doing so I paid attention to the occurrence or non-occurrence of effects other than those with which I was at the time most concerned. Since the resuffs were in many cases not in accordance with the statements of earlier observers, it seemed to me desirable to determine as many as possible of the “sympathetic” effects, which can be produced by stimulation of each of the lower cervical and of the upper thoracic nerves.

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Pulmonary afferent activity recorded from sympathetic nerves

Journal of Applied Physiology ◽

10.1152/jappl.1975.39.1.37 ◽

1975 ◽

Vol 39 (1) ◽

pp. 37-40 ◽

Cited By ~ 56

Author(s):

D. R. Kostreva ◽

E. J. Zuperku ◽

G. L. Hess ◽

R. L. Coon ◽

J. P. Kampine

Keyword(s):

Fiber Type ◽

Sympathetic Nerves ◽

Lung Parenchyma ◽

Sodium Pentobarbital ◽

Afferent Activity ◽

Lung Inflation ◽

Conduction Velocities ◽

Rami Communicantes ◽

The Right ◽

Upper Thoracic

This study in mongrel dogs, anesthetized with sodium pentobarbital, verified the existence of pulmonary receptors whose afferents traverse the right and left upper thoracic white rami communicantes. These receptors responded to lung inflation as well as pinching of the lung parenchyma and were nonadapting in nature. In some fibers, increases in afferent activity were also observed when the pulmonary artery and veins were mechanically stimulated by probing. Conduction velocities of these afferents were measured in single-fiber preparations and were of the Adelta fiber type.

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Observations on the Medullated Fibres of the Sympathetic System and chiefly on those of the Grey Rami Communicantes

The Journal of Physiology ◽

10.1113/jphysiol.1896.sp000611 ◽

1896 ◽

Vol 20 (1) ◽

pp. 55-76 ◽

Cited By ~ 38

Author(s):

J. N. Langley

Keyword(s):

Sympathetic System ◽

Rami Communicantes

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II. On the origin from the spinal cord of the cervical and upper thoracic sympathetic fibres, with some observations on white and grey rami communicantes

Proceedings of the Royal Society of London ◽

10.1098/rspl.1891.0057 ◽

1892 ◽

Vol 50 (302-307) ◽

pp. 446-448

Keyword(s):

Spinal Cord ◽

Vertebral Canal ◽

Rami Communicantes ◽

Upper Thoracic

The experiments of which an account is given in this paper were made upon anæsthetised cats, dogs, and rabbits. The lower cervical and upper thoracic nerves were tied, cut, and stimulated in the vertebral canal, and the effects of the stimulation observed.

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