Neurons of the Hypoglossal Nucleus of the Rat

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Abstract
The neurons of the hypoglossal nucleus in the medulla of the brain stem of the laboratory rat are described from Nissl, Golgi impregnation, horseradish peroxidase, and electron microscopic preparations. The cell body of the neuron is multipolar, measures 30 micrometers to 40 micrometers its largest diameter, and gives off four to five primary dendrites. As the dendrites radiate from the cell body they may remain within the ipsilateral hypoglossal nucleus, cross the midline into the contralateral hypoglossal nucleus, or extend out into the adjacent reticular formation.