Although the pelvic autonomic plexus may be considered a mixture of sympathetic and parasympathetic nerves, little information on its composite fibers is available. Using 10 donated elderly cadavers, we investigated in detail the topohistology of nerve fibers in the posterior part of the periprostatic region in males and the infero-anterior part of the paracolpium in females. Neuronal nitric ox...

Stimulation of mechanoreceptors in skeletal muscles such as contraction and stretch elicits reflexive autonomic nervous system changes which impact cardiovascular control. There are pressure-sensitive mechanoreceptors in skeletal muscles. Mechanical pressure stimulation of skeletal muscles can induce reflex changes in heart rate (HR) and blood pressure, although the neural mechanisms underlying...

T H E sympathetic outflow to the head and neck and the greater part of that to the upper limbs passes on each side through the relatively small confines of the stellate ganglion and is here subject to interruption by stellate ganglion block. This block will cut off all efferent sympathetic impulses to the head and neck and most, if not all, of those to the upper limb and may be of value for exa...

Frequency-domain analyses were used to determine the effect of cold stress on the relationships between the discharge bursts of sympathetic nerve pairs, sympathetic and aortic depressor nerve pairs, and sympathetic and phrenic nerve pairs in chloralose-anesthetized, baroreceptor-innervated rats. Sympathetic nerve discharge (SND) was recorded from the renal, lumbar, splanchnic, and adrenal nerve...

To precisely evaluate low back pain, identification of the detailed innervation of the lumbar spine is necessary. On twenty-five sides of adult cadavers we investigated various patterns of rami communicantes (RC) and their relationship to the psoas major muscle (PM). In ten sides, we focused our dissection on the minute nerve supply of the anterior (ALL) and posterior longitudinal ligaments (PL...

It was shown by Bronk, Pitts and Larrabee (2), Cannon, Raule and Schaefer (4) and Sell, Erdelyi and Schaefer (14) that a marked increase of the efferent impulses in the sympathetic nerves, particularly in the cardiac sympathetic nerves and renal branch of the abdominal sympathetic nerves, was evoked by stimulating the central end of the peripheral sensory nerves. It was pointed out by them, fur...

produces the cardiac slowing, because cardiac glycosides can produce bradycardia even after bilateral severance of vagus nerves or under the effect of atropine (3, 4). Gold et al. (5, 6) suggested a direct bradycardiac action of cardiac glycosides on the heart muscle. However, the results on the effect of cardiac glycosides on the heart rate are still con troversial in the experiments with isol...

RANDALL, WALTER C., DONALD V. PRIOLA, AND RICHARD H. ULMER. A functional study of distribution of cardiac sympathetic nerves. Am. J. Physiol. 205(6): 1227-1231. I g63.-In dogs with unilaterally sympathectomized hearts, the remaining intact stellate ganglion was electrically stimulated I 4-58 days following sympathectomy. Pressures were simultaneously recorded from all four chambers of the heart...

PURPOSE To examine whether the activity of peripheral sympathetic nerves in animals with spinal cord injury can be controlled using therapeutic electrical stimulation. METHODS The spinal cords of 6 Wistar rats were severed at T12/T13 disk level and were given continuous therapeutic electrical stimulation. Microneurography was used to record sympathetic nerve activity at 24, 48, and 72 hours a...