hypothalamic neurons so labeled are presumed to send axons to such circumventricular organs as the median eminence or neurohypophysis and include neurons of the magnocellular neurosecretory supraoptic and paraventricular nuclei , the accessory magnocellular nuclei , the parvicellular arcuate nucleus , and a band of periventricular cells extending rostrally into the medial preoptic area .
C0004461
axons
C0027882
neurons