chromaffin system


Also found in: Dictionary, Thesaurus, Legal, Encyclopedia.

chro·maf·fin sys·tem

the cells of the body that stain with chromium salts and occur in the medullary portion of the suprarenal gland and paraganglia, and in relation to certain sympathetic nerves.

chromaffin system

The mass of tissue forming paraganglia and medulla of suprarenal glands, which secretes epinephrine and stains readily with chromium salts. Similar tissue is found in the organs of Zuckerkandl and in the liver, testes, ovary, and heart.
Synonym: chromaffin tissue