Wang J, Watanabe T, Ohmori Y, Naito J, Fukuta K
Department of Veterinary Anatomy, School of Agriculture, Nagoya University, Japan.
Anat Histol Embryol. 1998 Feb;27(1):31-6. doi: 10.1111/j.1439-0264.1998.tb00152.x.
The distribution in the chicken of motoneurons innervating the hyolingual muscles, i.e. the M. branchiomandibularis (BM), M. ceratoglossus (CG), M. interceratobranchialis (CB), M. serpihyoideus (PH), M. stylohyoideus (YH) and one of the mandibular muscles, M. depressor mandibulae (DM), was examined by retrograde transport of horseradish peroxidase conjugated with wheatgerm agglutinin. Labelled motoneurons are found in the three subnuclei of the facial (VII) nucleus, as well as hypoglossal (XII) nucleus. The distribution of motoneurons projecting to the DM are observed in the three subnuclei, those of the BM, PH and YH in the intermediate and ventral subnuclei and those of the CB and CG in the intermediate subnucleus. Motoneurons projecting to the PH, YH, CB and CG are also distributed in the XII nucleus. The ratio of labelled motoneurons of the VII to XII nuclei decreases the PH, YH, CB and CG in that order, and the ratio of labelled ones of the ventral to intermediate subnuclei decreases the BM, PH and YH in that order. The topographical and functional aspects of the subdivision of the motor nucleus are discussed.
通过与麦胚凝集素结合的辣根过氧化物酶逆行运输，研究了支配舌骨舌肌的运动神经元在鸡体内的分布情况，这些肌肉包括鳃下颌肌（BM）、角舌肌（CG）、鳃间肌（CB）、蛇形舌骨肌（PH）、茎突舌骨肌（YH）以及一块下颌肌——降下颌肌（DM）。在面神经（VII）核的三个亚核以及舌下神经（XII）核中发现了标记的运动神经元。投射到DM的运动神经元分布在三个亚核中，投射到BM、PH和YH的运动神经元分布在中间亚核和腹侧亚核中，而投射到CB和CG的运动神经元分布在中间亚核中。投射到PH、YH、CB和CG的运动神经元也分布在XII核中。VII核与XII核中标记运动神经元的比例按PH、YH、CB和CG的顺序降低，腹侧亚核与中间亚核中标记运动神经元的比例按BM、PH和YH的顺序降低。本文讨论了运动核细分的地形学和功能方面。
