chromaffin tissue
Tissue in medulla of adrenal gland containing two populations of cells, one producing adrenaline, the other noradrenaline. The catecholamine is associated with carrier proteins (chromogranins) in membrane vesicles (chromaffin granules).

Dictionary of molecular biology. 2004.

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  • 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

  • chromaffin tissue — an endocrine tissue located in or near the kidneys which secretes adrenaline and which controls the blood pressure and regulates the chromatophores …   Dictionary of ichthyology

  • Tissue — A tissue in medicine is not like a piece of tissue paper. It is a broad term that is applied to any group of cells that perform specific functions. A tissue in medicine need not form a layer. Thus, The bone marrow is a tissue; Connective tissue… …   Medical dictionary

  • 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 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 — n. tissue in the medulla of the adrenal gland consisting of modified neural cells containing granules that are stained brown by chromates. Adrenaline and noradrenaline are released from the granules when the adrenal gland is stimulated by its… …   The new mediacal dictionary

  • Medullary chromaffin cell — Adrenal gland. (Medulla labeled at bottom right.) Latin endocrinocytus medullaris Code TH …   Wikipedia

  • hormone — hormonal, hormonic /hawr mon ik, moh nik/, adj. /hawr mohn/, n. 1. Biochem. any of various internally secreted compounds, as insulin or thyroxine, formed in endocrine glands, that affect the functions of specifically receptive organs or tissues… …   Universalium

  • endocrine system, human — ▪ anatomy Introduction  group of ductless glands (gland) that regulate body processes by secreting chemical substances called hormones (hormone). Hormones act on nearby tissues or are carried in the bloodstream to act on specific target organs… …   Universalium

  • body — 1. The head, neck, trunk, and extremities. The human b., consisting of head (caput), neck (collum), trunk (truncus), and limbs (membra). 2. The material part of a human, as distinguished from the …   Medical dictionary

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