Abstract

ULTRAMICROSCOPIC CHANGES IN THE SECRETORY DYNAMICS OF THE CERBRAL NEUROSECRETORY CELLS IN THE CONTEXT TO THERMAL ACCLIMATION IN LYMNAEA (RADIX) LUTEOLA

Dr. Trijit Nanda*, Sandipan Mondal and Dr. Malabika Bhattacharjee

ABSTRACT

In the present investigation, a general probe on the cytomorphic structure, nature and distribution of the NSCS in each of the ganglionic components of the cephalic whorl has been ascertained. Emphasis is paid more on the cerebral ganglion to substantiate correlative changes following one of the environmental (thermal) impact in the large sized neurosecretory neurons. Later, an attempt has been made to elucidate the infliction of different thermal regimes to the cerebral neurosecretory cells. The ultramicroscopic studies are made to comply with the histophysiological alterations of Neurosecretory cells (NSCs) under these temperature regimes. This has been made with a view to substantiate cryptomorphic changes probed through light microscopy. Coupled with this, histo- morphology of the DBCs has been initiated to have its ultramicroscopic contour with reference to their components and nature.

Keywords: Cryptomorphic structure, Environmental (thermal) impact, Neurosecretory cells, Histophysiology, Histo- morphology, Heterochromatin substance, Electron dense granules, Dorsal body cells (DBC’s).