Distribution of hypoglossal motor neurons innervating the prehensile tongue of the African pig-nosed frog, Hemisus marmoratum

Curtis W. Anderson, Kiisa C Nishikawa, Joyce Keifer

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Using retrograde neuronal tracers, a study of the distribution of hypoglossal motor neurons innervating the tongue musculature was performed in the African pig-nosed frog, Hemisus marmoratum. This species is a radically divergent anuran amphibian with a prehensile tongue that can be aimed in three dimensions relative to the head. The results illustrate a unique rostrocaudal distribution of the ventrolateral hypoglossal nucleus and an unusually large number of motor neurons within this cell group. During the evolution of the long, prehensile tongue of Hemisus, the motor neurons innervating the tongue have greatly increased in number and have become more caudally distributed in the brainstem and spinal cord compared to other anurans. These observations have implications for understanding neuronal reconfiguring of motoneurons for novel morphologies requiring new muscle activation patterns.

Original languageEnglish (US)
Pages (from-to)5-8
Number of pages4
JournalNeuroscience Letters
Volume244
Issue number1
DOIs
StatePublished - Mar 6 1998
Externally publishedYes

Fingerprint

Motor Neurons
Tongue
Anura
Swine
Amphibians
Brain Stem
Spinal Cord
Head
Muscles

Keywords

  • Anuran amphibian
  • Hypoglossal nerve
  • Motor nuclei
  • Tongue

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Distribution of hypoglossal motor neurons innervating the prehensile tongue of the African pig-nosed frog, Hemisus marmoratum. / Anderson, Curtis W.; Nishikawa, Kiisa C; Keifer, Joyce.

In: Neuroscience Letters, Vol. 244, No. 1, 06.03.1998, p. 5-8.

Research output: Contribution to journalArticle

@article{95c05ab9e1b64da7bf952d00e58df7da,
title = "Distribution of hypoglossal motor neurons innervating the prehensile tongue of the African pig-nosed frog, Hemisus marmoratum",
abstract = "Using retrograde neuronal tracers, a study of the distribution of hypoglossal motor neurons innervating the tongue musculature was performed in the African pig-nosed frog, Hemisus marmoratum. This species is a radically divergent anuran amphibian with a prehensile tongue that can be aimed in three dimensions relative to the head. The results illustrate a unique rostrocaudal distribution of the ventrolateral hypoglossal nucleus and an unusually large number of motor neurons within this cell group. During the evolution of the long, prehensile tongue of Hemisus, the motor neurons innervating the tongue have greatly increased in number and have become more caudally distributed in the brainstem and spinal cord compared to other anurans. These observations have implications for understanding neuronal reconfiguring of motoneurons for novel morphologies requiring new muscle activation patterns.",
keywords = "Anuran amphibian, Hypoglossal nerve, Motor nuclei, Tongue",
author = "Anderson, {Curtis W.} and Nishikawa, {Kiisa C} and Joyce Keifer",
year = "1998",
month = "3",
day = "6",
doi = "10.1016/S0304-3940(98)00111-6",
language = "English (US)",
volume = "244",
pages = "5--8",
journal = "Neuroscience Letters",
issn = "0304-3940",
publisher = "Elsevier Ireland Ltd",
number = "1",

}

TY - JOUR

T1 - Distribution of hypoglossal motor neurons innervating the prehensile tongue of the African pig-nosed frog, Hemisus marmoratum

AU - Anderson, Curtis W.

AU - Nishikawa, Kiisa C

AU - Keifer, Joyce

PY - 1998/3/6

Y1 - 1998/3/6

N2 - Using retrograde neuronal tracers, a study of the distribution of hypoglossal motor neurons innervating the tongue musculature was performed in the African pig-nosed frog, Hemisus marmoratum. This species is a radically divergent anuran amphibian with a prehensile tongue that can be aimed in three dimensions relative to the head. The results illustrate a unique rostrocaudal distribution of the ventrolateral hypoglossal nucleus and an unusually large number of motor neurons within this cell group. During the evolution of the long, prehensile tongue of Hemisus, the motor neurons innervating the tongue have greatly increased in number and have become more caudally distributed in the brainstem and spinal cord compared to other anurans. These observations have implications for understanding neuronal reconfiguring of motoneurons for novel morphologies requiring new muscle activation patterns.

AB - Using retrograde neuronal tracers, a study of the distribution of hypoglossal motor neurons innervating the tongue musculature was performed in the African pig-nosed frog, Hemisus marmoratum. This species is a radically divergent anuran amphibian with a prehensile tongue that can be aimed in three dimensions relative to the head. The results illustrate a unique rostrocaudal distribution of the ventrolateral hypoglossal nucleus and an unusually large number of motor neurons within this cell group. During the evolution of the long, prehensile tongue of Hemisus, the motor neurons innervating the tongue have greatly increased in number and have become more caudally distributed in the brainstem and spinal cord compared to other anurans. These observations have implications for understanding neuronal reconfiguring of motoneurons for novel morphologies requiring new muscle activation patterns.

KW - Anuran amphibian

KW - Hypoglossal nerve

KW - Motor nuclei

KW - Tongue

UR - http://www.scopus.com/inward/record.url?scp=0032489339&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032489339&partnerID=8YFLogxK

U2 - 10.1016/S0304-3940(98)00111-6

DO - 10.1016/S0304-3940(98)00111-6

M3 - Article

C2 - 9578131

AN - SCOPUS:0032489339

VL - 244

SP - 5

EP - 8

JO - Neuroscience Letters

JF - Neuroscience Letters

SN - 0304-3940

IS - 1

ER -