A study of neuronal profile of inferior olivary nuclear complex in foetal and adult human medulla.
Date
2013-07
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Abstract
Introduction: ION receives proprioceptive impulses from spino-olivary tract and conveys the fibers to the
cerebellum through olivo-cerebellar tract. There is paucity of data in human olivary complex, hence the present
study is done. Materials and Methods: Study was conducted with 15 adult brains and 25 fetuses of different
gestations were perfused with 10% formalin and processed for histological examination. Obeservations: Rounded
cells have been seen infiltrating the entire field. at 16 weeks of gestation. Segregation of neurons into
principal, medial, and dorsal accessory olivary nuclei at 20 wks gestation. Discussion: Neuron differentiation
into oval, round, multipolar types has begun at 40 wks gestation. Neurons in the olivary subdivisions are grouped
in separate clusters as per Ramon y Cajal,1909; Scheibel and Scheibel, 1955, Bowman and King, 1973.
Multipolar neurons dominated in adult inferior olivary nucleus. Conclusion: The greater development of
neurons is a consequence of finer regulation of various movements of hands and finger associated with
movement of head and eyes.
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Keywords
CEREBELLUM, INFERIOR OLIVARY NUCLEUS, MEDULLA, NEURON
Citation
Rao B Narasinga, Padmini M Pramila. A study of neuronal profile of inferior olivary nuclear complex in foetal and adult human medulla. International Journal of Anatomy and Research. 2013 Jul-Sept; 1(2): 36-39.