Horseradish peroxidase study of the localization of motoneurons in the accessory nucleus (XI) of the Japanese toad.
It has been conventionally accepted that the anuran accessory nerve (nXI) only innervates the musculus cucullaris (C). However, we have found that the nXI of the Japanese toad innervated the musculus interscapularis (IS) in addition to the C. The motoneurons innervating these muscles were labelled by the intramuscular injection of horseradish peroxidase (HRP). In the accessory nucleus (XI), the motoneurons were somatotopically organized: the C motoneurons were localized more rostrally, while the IS motoneurons more caudally.
Takei
K
K
Zoological Institute, Faculty of Science, University of Tokyo, Japan.
Oka
Y
Y
Satou
M
M
Ueda
K
K
D000055:Accessory Nerve / Q000166:cytology*; D000818:Animals; D001933:Brain Stem / Q000166:cytology; D002025:Bufonidae / Q000033:anatomy & histology*; D006735:Horseradish Peroxidase; D009046:Motor Neurons / Q000166:cytology*; D009132:Muscles / Q000294:innervation*; D014630:Vagus Nerve / Q000166:cytology
D006735:Horseradish Peroxidase