- APUD cells that stain readily with chromium salts, their cytoplasmic granules taking on a characteristic brown color; they are found especially in cells of the adrenal medulla and in paraganglia of the coccygeal gland and carotid gland, along the sympathetic nerves, and in various organs. They contain chromaffin granules. See also enterochromaffin c's and argentaffin c's. Called also pheochrome cells and pheochromocytes.
Medical dictionary. 2011.
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Chromaffin cell — Chromaffin cells are neuroendocrine cells found in the medulla of the adrenal gland (suprarenal gland located above the kidneys) and in other ganglia of the sympathetic nervous system. They are derived from the embryonic neural crest. In the… … Wikipedia
Chromaffin — Taking up and staining strongly with Chromium salts. Chromaffin may refer to: Chromaffin cells, neuroendocrine cells in the adrenal medulla. Chromophil cells, hormone producing cells showing chromaffin granules that readily absorb chromium stains … Wikipedia
chromaffin — Giving a brownish yellow reaction with chromic salts; denoting certain cells in the medulla of the adrenal glands and in paraganglia. SYN: chromaphil, chromatophil (3), chromophil (3), chromophile, pheochrome (1). [chrom + L. affinis, affinity] * … Medical dictionary
chromaffin cell — A type of cell that makes neurohormones (chemicals that are made by nerve cells and used to send signals to other cells) and releases them into the blood. Chromaffin cells make epinephrine (adrenaline) and norepinephrine (noradrenaline). They are … English dictionary of cancer terms
chromaffin — adjective Etymology: International Scientific Vocabulary chrom + Latin affinis bordering on, related more at affinity Date: 1903 staining deeply with chromium salts < chromaffin cells of the adrenal medulla > … New Collegiate Dictionary
chromaffin granules — organelles found in the chromaffin cells of the adrenal medulla, where epinephrine and norepinephrine are synthesized, stored, and released when needed … Medical dictionary
chromaffin hormone — a hormone released from chromaffin cells; epinephrine is a major type … Medical dictionary
chromaffin reaction — the taking on of a deep brown color by tissue of the adrenal medulla or other types that contain the catecholamines epinephrine and norepinephrine, within 12 hours after it is placed in a dichromate solution; this can be used to detect… … Medical dictionary
chromaffin system — the chromaffin cells of the body considered collectively; see under cell … Medical dictionary
chromaffin tissue — tissue composed largely of chromaffin cells, well supplied with nerves and vessels; it occurs in the adrenal medulla and also forms the paraganglia of the body … Medical dictionary