chromaffin reaction


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 pheochromocytomas and other tumors that produce catecholamines. See also chromaffin cells, under cell.

Medical dictionary. 2011.

Look at other dictionaries:

  • 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

  • reaction — 1. The response of a muscle or other living tissue or organism to a stimulus. 2. The color change effected in litmus and certain other organic pigments by contact with substances such as acids or alkalies; also the property that such substances… …   Medical dictionary

  • Medulla — The innermost part. The spinal medulla, for example, is that part of the spinal cord that is lodged within the vertebral canal. * * * Any soft marrow like structure, especially in the center of a part. SEE ALSO: m. oblongata. SYN: substantia… …   Medical dictionary

  • 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

  • Epinephrine — Adrenaline and Adrenalin redirect here. For other uses, see Adrenaline (disambiguation). (R) (–) L Epinephrine or (R) (–) L adrenaline …   Wikipedia

  • nervous system, human — ▪ anatomy Introduction       system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… …   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

  • Cell — The basic structural and functional unit in people and all living things. Each cell is a small container of chemicals and water wrapped in a membrane. Each cell in the human body there are 100 trillion cells in each of us contains the entire… …   Medical dictionary

  • Enterochromaffin cell — Enterochromaffin (EC) cells (Kulchitsky cells) are a type of enteroendocrine cell [MeshName|Enterochromaffin+Cells] occurring in the epithelia lining the lumen of the gastrointestinal tract. FunctionThey produce and contain about 90% of the body… …   Wikipedia

  • 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


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.