International Journal of Anatomy and Research

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Type of Article: Original Research

Year: 2016 | Volume 4 | Issue 3 | Page No. 2764-2770

Date of Publication: 31-08-2016



K. R. S. Prasad Rao.

Associate Professor, Dept. of Anatomy, GVP Institute of Health Care and Medical Technology, Visakhapatnam, Andhra Pradesh, India.

Address: Dr. K. R. S. Prasad Rao., MS., Associate Professor, Department of Anatomy, GVP Institute of Health Care and Medical Technology, Marikavalasa, Madhurawada, Visakhapatnam-530048, Andhra Pradesh, India. Mobile no.: +918332943989 E-Mail:


Background Hippocampus assumes the most amazing part of brain of all mammals. It is located in the floor of inferior horn of lateral ventricle. It belongs to archipallium. Materials and Methods: twenty  human adult  brains from cadavers ages 30 to 70 years are used. Hippocampus dissected out of Brain, specimens were processed into paraffin blocks, sectioned (10 µm thick), and stained using Haematoxylin and Eosin, cytometric analysis was done under light microscope with eyepiece micrometers.
Results: The lamellae of the hippocampus were morpho and cytometrically evaluated for thickness of various layers and neuronal sizes , form and density  in different  gestational period.The neurons that are present are pyramidal in shape and their size and density varied in different Cornu Ammonis sub fields of hippocampus. The Plexiform layer consisted a thickness of 920 μ to the maximum and 276 μ to the minimum. The thickness of polymorph layer ranged from 1288 μ to 920 μ. Dentate gyrus showed a trilaminar normal pattern. The granule cells are conspicuous by their small size and their diameter is 9.2 μ. The indices almost tallied with the observations of earlier authors.
Conclusion The above indices almost tallied with the observations of D.W. Zaidel (1999).
KEY WORDS: Hippocampus, Cornu ammonis (CA), Dentate gyrus, Adult, Cytometric.


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K. R. S. Prasad Rao. CYTOARCHITECTURE OF HUMAN ADULT HIPPOCAMPUS. Int J Anat Res 2016;4(3):2764-2770. DOI: 10.16965/ijar.2016.330




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