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Histogenesis of nucleus proprius of lumbar spinal cord of fullterm human foetus

Authors:Bhimaidevi N , Narasingarao B , Sunitha V , Pramila Padmini
Int J Biol Med Res. 2012; 3(2): 1506-1508  |  PDF File

Abstract

Dorsal horn of grey matter of spinal cord is key centre for perception of not only nociceptive but also other sensory modalities. Earlier authors designated six laminae for the dorsal horn in different mammals including human. The literature available on the cytoarchitecture of nucleus proprius of human foetal spinal cord is meager. The present study is an attempt to observe histomorphometry of neurons of nucleus proprius of lumbar segment of spinal cord numerical density and population study of nucleus proprius. The spinal cord of a destitute full term foetus has been dissected and processed for light microscopic study. Holm’s silver nitrate staining was done for all sections. Nucleus proprius was found to be bulbous. There is a difference between right and left nucleus proprius in as far as morphometry, numerical density and population study of right and left nucleus proprius