Sex difference in Onuf’s nucleus homologue in the Asian musk shrew
作者： Kathryn Polak , Louise M. Freeman
DOI: 10.1016/J.BRAINRES.2010.05.056
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摘要: Perineal muscles essential for copulatory functioning are innervated by Onuf's nucleus in humans and the spinal of bulbocavernosus (SNB) dorsolateral (DLN) rats. These structures sexually differentiate as a result developmental androgen exposure most species examined. The homologous structure Asian musk shrew (Suncus murinus) is single cluster lateral DLN/Onuf's position ventral horn cord; these motoneurons innervate both ischiocavernosus shrew. We found expected sex difference motoneuron number DLN, but not two neighboring clusters, retrodorsolateral (RDLN) ventrolateral (VLN). Male shrews also have significantly larger soma areas VLN DLN than females, male nuclei female. was evident raw counts after accounting split error.
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