Medical Definition of Paraventricular nucleus

1. A triangular group of large magnocellular neurons in the periventricular zone of the anterior half of the hypothalamus. The cells of the nucleus are similar to those of the supraoptic nucleus; the axons of about 20% of their number join in the formation of the supraopticohypophysial tract and are functionally associated with the posterior lobe of the hypophysis; they project fibres to the brainstem nuclei (dorsal motor nucleus and solitary nucleus) and to the intermediolateral cell column of the spinal cord at thoracic, lumbar, and spinal levels; similar descending autonomic fibres arise from the lateral and posterior hypothalamic nuclei. Synonym: nucleus paraventricularis, filiform nucleus, nucleus filiformis. (05 Mar 2000)



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Lexicographical Neighbors of Paraventricular Nucleus

paravail
paravalvular
paravane
paravanes
paravant
paravauxite
paravector
paravectors
paravenous
paravent
paraventricular
paraventricular hypothalamic nucleus
paraventricular nucleus (current term)
paravents
paraventure
paravertebral
paravertebral anaesthesia
paravertebral ganglia
paravertebral gutter
paravertebral line
paravertebral triangle
paravesical
paravesical fossa
paravesical lymph nodes
paravesical pouch
paravinogradovite
paravirtualisation

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