Hormone, Neurohypophysis and the polypeptide hormones of the hypothalamus

Another neurosecretory system, which involves the hypothalamic region of the brain and the neurohypophysis of the pituitary gland, originates in groups of neurosecretory cells in the hypothalamus called, in mammals, the nucleus supraopticus and the nucleus paraventricularis and, in lower vertebrates, the nucleus preopticus. Neurohormones from these regions