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neu·ro·hor·mone -'hȯr-.mōn n a hormone (as acetylcholine or norepinephrine) produced by or acting on nervous tissue
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n.
a hormone that is produced within specialized nerve cells and is secreted from the nerve endings into the circulation. Examples are the hormones oxytocin and vasopressin, produced within the nerve cells of the hypothalamus and released into the circulation in the posterior pituitary gland, and noradrenaline, released from chromaffin tissue in the adrenal medulla.
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neu·ro·hor·mone (noorґo-hor″mōn) a hormone secreted by a specialized neuron into the bloodstream, the cerebrospinal fluid, or the intercellular spaces of the nervous system; examples are neuropeptides and other types of neuromodulators. Cf. neuroendocrine. neurohormonal adjMedical dictionary. 2011.