Exosomatic Organ

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Exosomatic Organ

 

(also ectosomatic organ), a concept introduced into animal morphology by the Soviet zoologist A. N. Severtsov to designate organs whose functions are directly linked with the external (in relation to the living organism) environment. Exosomatic organs include the skin and its appendages (feathers, hairs, scales), sense organs, and the intestinal canal and its glands.

REFERENCE

Severtsov, A. N. Morfologicheskie zakonomernosti evoliutsii. Moscow-Leningrad, 1939. Page 258.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.