Motoneurons innervating the external anal and urethral sphincters of the female cat have different patterns of dendritic arborization

Michael S. Beattie; Qun Li; M. Gail Leedy; Jacqueline C. Bresnahan

doi:10.1016/0304-3940(90)90346-B

Motoneurons innervating the external anal and urethral sphincters of the female cat have different patterns of dendritic arborization

Michael S. Beattie, Qun Li, M. Gail Leedy, Jacqueline C. Bresnahan

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

Abstract

The locations and dendritic arbors of sacral motoneurons (MNs) innervating the striated external anal and urethral sphincters (EAS and EUS, respectively) of the cat were investigated using muscle injections of cholera toxin-conjugated HRP (CT-HRP). Serial reconstructions showed that all cells labelled after EAS injections were located in the dorsomedial (DM) subdivision of Onuf's nucleus, whereas all cells labelled from the EUS were located in the ventrolateral (VL) subdivision. The dendritic arbors of EAS and EUS MNs were very different, suggesting differences in afferent control. In addition, prominent bundles of dendrites extended preferentially into the regions occupied by functionally appropriate preganglionic neurons (PGNs) in the sacral parasympathetic nucleus (SPN) which innervate the colon and bladder.

Original language	English (US)
Pages (from-to)	69-74
Number of pages	6
Journal	Neuroscience Letters
Volume	111
Issue number	1-2
DOIs	https://doi.org/10.1016/0304-3940(90)90346-B
State	Published - Mar 26 1990
Externally published	Yes

Keywords

Anal sphincter
Motoneuron
Onuf's nucleus
Urethral sphincter

ASJC Scopus subject areas

General Neuroscience

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10.1016/0304-3940(90)90346-B

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@article{fc82074ae3154e4ca413a54de187f042,

title = "Motoneurons innervating the external anal and urethral sphincters of the female cat have different patterns of dendritic arborization",

abstract = "The locations and dendritic arbors of sacral motoneurons (MNs) innervating the striated external anal and urethral sphincters (EAS and EUS, respectively) of the cat were investigated using muscle injections of cholera toxin-conjugated HRP (CT-HRP). Serial reconstructions showed that all cells labelled after EAS injections were located in the dorsomedial (DM) subdivision of Onuf's nucleus, whereas all cells labelled from the EUS were located in the ventrolateral (VL) subdivision. The dendritic arbors of EAS and EUS MNs were very different, suggesting differences in afferent control. In addition, prominent bundles of dendrites extended preferentially into the regions occupied by functionally appropriate preganglionic neurons (PGNs) in the sacral parasympathetic nucleus (SPN) which innervate the colon and bladder.",

keywords = "Anal sphincter, Motoneuron, Onuf's nucleus, Urethral sphincter",

author = "Beattie, {Michael S.} and Qun Li and Leedy, {M. Gail} and Bresnahan, {Jacqueline C.}",

year = "1990",

month = mar,

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doi = "10.1016/0304-3940(90)90346-B",

language = "English (US)",

volume = "111",

pages = "69--74",

journal = "Neuroscience Letters",

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number = "1-2",

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T1 - Motoneurons innervating the external anal and urethral sphincters of the female cat have different patterns of dendritic arborization

AU - Beattie, Michael S.

AU - Li, Qun

AU - Leedy, M. Gail

AU - Bresnahan, Jacqueline C.

PY - 1990/3/26

Y1 - 1990/3/26

N2 - The locations and dendritic arbors of sacral motoneurons (MNs) innervating the striated external anal and urethral sphincters (EAS and EUS, respectively) of the cat were investigated using muscle injections of cholera toxin-conjugated HRP (CT-HRP). Serial reconstructions showed that all cells labelled after EAS injections were located in the dorsomedial (DM) subdivision of Onuf's nucleus, whereas all cells labelled from the EUS were located in the ventrolateral (VL) subdivision. The dendritic arbors of EAS and EUS MNs were very different, suggesting differences in afferent control. In addition, prominent bundles of dendrites extended preferentially into the regions occupied by functionally appropriate preganglionic neurons (PGNs) in the sacral parasympathetic nucleus (SPN) which innervate the colon and bladder.

AB - The locations and dendritic arbors of sacral motoneurons (MNs) innervating the striated external anal and urethral sphincters (EAS and EUS, respectively) of the cat were investigated using muscle injections of cholera toxin-conjugated HRP (CT-HRP). Serial reconstructions showed that all cells labelled after EAS injections were located in the dorsomedial (DM) subdivision of Onuf's nucleus, whereas all cells labelled from the EUS were located in the ventrolateral (VL) subdivision. The dendritic arbors of EAS and EUS MNs were very different, suggesting differences in afferent control. In addition, prominent bundles of dendrites extended preferentially into the regions occupied by functionally appropriate preganglionic neurons (PGNs) in the sacral parasympathetic nucleus (SPN) which innervate the colon and bladder.

KW - Anal sphincter

KW - Motoneuron

KW - Onuf's nucleus

KW - Urethral sphincter

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JF - Neuroscience Letters

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ER -

Motoneurons innervating the external anal and urethral sphincters of the female cat have different patterns of dendritic arborization

Abstract

Keywords

ASJC Scopus subject areas

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