Multiplicity of the afferent pathways mediating the exercise pressor reflex

L. Britt Wilson; P. Tim Wall; Kanji Matsukawa; Jere H. Mitchell

doi:10.1016/0006-8993(91)91636-F

Multiplicity of the afferent pathways mediating the exercise pressor reflex

L. Britt Wilson, P. Tim Wall, Kanji Matsukawa, Jere H. Mitchell

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

The cardiovascular responses to isometric contraction of the triceps surae muscle of one leg were determined before and after transecting the ipsilateral L₇ or L₆ and S₁ spinal roots. Sectioning only the L₇ spinal root slightly attenuated the pressor, but not the heart rate response induced by skeletal muscle contraction, while cutting the L₆ and S₁ spinal roots (L₇ intact) had no effect on the cardiovascular changes. This indicates that there is multiplicity in neural afferent pathways that mediate the exercise pressor reflex.

Original language	English (US)
Pages (from-to)	316-319
Number of pages	4
Journal	Brain Research
Volume	539
Issue number	2
DOIs	https://doi.org/10.1016/0006-8993(91)91636-F
State	Published - Jan 25 1991

Keywords

Exercise pressor reflex
Muscle afferent
Spinal root

ASJC Scopus subject areas

General Neuroscience
Molecular Biology
Clinical Neurology
Developmental Biology

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10.1016/0006-8993(91)91636-F

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abstract = "The cardiovascular responses to isometric contraction of the triceps surae muscle of one leg were determined before and after transecting the ipsilateral L7 or L6 and S1 spinal roots. Sectioning only the L7 spinal root slightly attenuated the pressor, but not the heart rate response induced by skeletal muscle contraction, while cutting the L6 and S1 spinal roots (L7 intact) had no effect on the cardiovascular changes. This indicates that there is multiplicity in neural afferent pathways that mediate the exercise pressor reflex.",

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AU - Wall, P. Tim

AU - Matsukawa, Kanji

AU - Mitchell, Jere H.

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Y1 - 1991/1/25

N2 - The cardiovascular responses to isometric contraction of the triceps surae muscle of one leg were determined before and after transecting the ipsilateral L7 or L6 and S1 spinal roots. Sectioning only the L7 spinal root slightly attenuated the pressor, but not the heart rate response induced by skeletal muscle contraction, while cutting the L6 and S1 spinal roots (L7 intact) had no effect on the cardiovascular changes. This indicates that there is multiplicity in neural afferent pathways that mediate the exercise pressor reflex.

AB - The cardiovascular responses to isometric contraction of the triceps surae muscle of one leg were determined before and after transecting the ipsilateral L7 or L6 and S1 spinal roots. Sectioning only the L7 spinal root slightly attenuated the pressor, but not the heart rate response induced by skeletal muscle contraction, while cutting the L6 and S1 spinal roots (L7 intact) had no effect on the cardiovascular changes. This indicates that there is multiplicity in neural afferent pathways that mediate the exercise pressor reflex.

KW - Exercise pressor reflex

KW - Muscle afferent

KW - Spinal root

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Multiplicity of the afferent pathways mediating the exercise pressor reflex

Abstract

Keywords

ASJC Scopus subject areas

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