The salivatory nuclei in the brainstem of the monkey (Macaca mulatta)

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Abstract
By inducing retrograde degeneration the salivatory nuclei were localized in the brainstem of the Macaca mulatta. It was observed that the neurons sending efferent fibres to the three salivary glands lie in two discrete groups, the lateral and medial salivatory nuclei situated under the floor of the fourth ventricle at the level of the pontomedullary junction. The lateral nucleus was in close relation to the medial and lateral vestibular nuclei, was about 0.3 mm long and consisted of mediumsized neurons. The medial nucleus was situated close to the median raphe, was about 0.5 mm long and consisted of smaller‐sized neurons. The caudal parts of the nuclei showed evidence of sending fibres to the ipsilateral glands, the cranial parts to the contralateral glands, and that the intermediate zones sent fibres bilaterally.