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Quantitative studies of superior cervical sympathetic ganglia in a variety of primates including man. II. Neuronal packing density
Author(s) -
Ebbesson Sven O. E.
Publication year - 1968
Publication title -
journal of morphology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 74
eISSN - 1097-4687
pISSN - 0362-2525
DOI - 10.1002/jmor.1051240205
Subject(s) - squirrel monkey , ganglion , primate , biology , anatomy , superior cervical ganglion , cervical ganglia , cell bodies , nucleus , sympathetic ganglion , central nervous system , neuroscience
The volumes of a sample of primate superior cervical sympathetic ganglia were measured and related to body weight and to the number of ganglionic neurons. Estimates of volumes of the ganglia varied between 1.956 mm 3 in squirrel monkey and 173.530 mm 3 in a human specimen. Average cell densities for the ganglia ranged from 4,455 cells/mm 3 in a human ganglion to 32,528 cells/mm 3 in a squirrel monkey ganglion. Mean cell territories varied from 0.0000307 mm 3 in a squirrel monkey ganglion to 0.0002245 mm 3 in a human ganglion. Analysis of the data reveals striking trends of correlation between body size, volume of ganglia, and average cell territories. Since similar correlations have been described for other types of neuronal cell aggregates, it is suggested that for any given nucleus, ganglion or cortical area, the neuronal packing density varies as a function of body size.