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  • Title: Arrangement of supramandibular and suprahyoid motoneurons in the rat; a fluorescent tracer study.
    Author: Rokx JT, van Willigen JD.
    Journal: Acta Anat (Basel); 1985; 122(3):158-62. PubMed ID: 4013650.
    Abstract:
    The arrangement of the motoneurons innervating the supramandibular and suprahyoid muscles was studied in Wistar albino rats using two fluorescent tracers: nuclear yellow and true blue. All supramandibular motoneurons were found within the trigeminal motor nucleus; they appeared to be somatotopically arranged. The suprahyoid motoneurons were located in an accessory trigeminal-facial motor complex. No overlap of the motoneuron pools of the supramandibular and suprahyoid muscle group was observed. Only motoneurons ipsilateral to the treated muscles were labeled. It was shown that a one-to-one relationship always exists between motoneuron and muscle.
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