The location of descending fibres to sympathetic preganglionic vasomotor and sudomotor neurons in man.
AUTOR(ES)
Nathan, P W
RESUMO
Evidence is given of the location in the spinal cord of man of the central sympathetic fibres supplying vasomotor and sudomotor neurons of the body caudal to the head and neck. The evidence is based on anterolateral cordotomies. The fibres lie within the medial part of the equatorial plane, extending from the base of the posterior horn and the lateral horn across the medial half of the white matter. The evidence from a previous paper together with that of the present paper is that the pathway maintains this position throughout the spinal cord as far as the L2 segment. The sympathomotor fibres caudal to the head and neck are supplied from both sides of the cord: sympathetic activity is not removed, although it may be slightly diminished, by a hemisection of the cord. The evidence suggests that sympathetic fibres for vasomotor control leave the cord cranial to the Th 7 segment. The knowledge of the location of the pathways is of value to neurosurgeons so that they may be avoided in the operation of anterolateral cordotomy.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1032446Documentos Relacionados
- The location of descending fibres to sympathetic neurons supplying the eye and sudomotor neurons supplying the head and neck.
- Differentiation of vasodilator and sudomotor responses in the cat paw pad to preganglionic sympathetic stimulation.
- Sympathetic control of aqueous secretion in man.
- The anterior fibres of the levator ani muscle in man.
- Evoked skin sympathetic nerve responses in man.