Dictionary > Chromaffin cell

Chromaffin cell

Definition
noun, plural: chromaffin cells
Any of the cells (mostly found) in adrenal medulla and in other ganglia of the sympathetic nervous system that stains readily with chromium salts (hence the name) due to the presence of catecholamines, which it synthesizes and secretes.
Supplement
In humans, chromaffin cells are derived from the embryonic neural crest. Most of them are located near the sympathetic ganglia, vagus nerve, paraganglia and carotid arteries. A few of them are found in bladder wall, prostate, and behind the liver.
In lower vertebrates, they are located in suprarenal organs.
They are named chromaffin cells because these cells have an affinity for stains containing chromium salts that oxidize and polymerize catecholamines, resulting in brown color (an indication of the presence of epinephrine or norepinephrine).
Word origin: chromaffin: Greek chromaffine (1898), equiv. to chrom- chrom- + Latin affinis next to, inclined to.
Related terms: sympathochromaffin cell.


You will also like...

Fossil trilobite imprint in the sediment
Insects

There are more species of insects than any other species combined. This surely illustrates that insects have the selecti..

Early Earth
The Origins of Life

This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..

Non-Mendelian Inheritance
Non-Mendelian Inheritance

In this tutorial, find out more about certain types of inheritance that does not follow the Mendelian inheritance patter..

Salmon jumping upstream in the river
Lotic Communities & Animals

A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..

Still freshwater and plants
Still Freshwater & Plants

Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..

"Opabinia regalis"
The Evolutionary Development of Multicellular Organisms

Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..