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A regional volumetric study of the gray and white matter of the human prenatal spinal cord

✍ Scribed by A. M. Lassek; G. L. Rasmussen

Publisher: John Wiley and Sons
Year: 1939
Tongue: English
Weight: 886 KB
Volume: 70
Category: Article
ISSN: 0021-9967
DOI: 10.1002/cne.900700108

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✦ Synopsis

Department of Anatomy, Medical College of tlae State of 8011th Carolina, Charlestoit EIGHT FIQURES

Little investigative work has been done on the prenatal growth of the gray and white matter of the human spinal cord. This is especially true of late fetal cords. Miller ('13) studied quantitatively the gray and white matter of the spinal cord in a series of five human fetuses ranging in size from 11 to 150 mm., crown-rump measurements. His figures are not true values since they do not take into account the factor of shrinkage due to dehydration in the embedding and staining processes. It is the purpose of the present investigation to study the regional gray and white matter of the human spinal cord from the quantitative viewpoint in a series of fetuses varying in age from 3.9 to 10 lunar months.

MATERTAL AND METHODS

A total of nineteen spinal cords were selected from Negro fetuses of the following ages: 3.9, 4. 7, 5.3, 6.5, 7.5, 8.1, 8.7, 9.3 and 10 lunar months. The determination of the ages was calculated by the formula A = 2.3 + 0.089 CH + 0.00128 ( C H ) 2 where A equals the age in lunar months and CH the crown-heel length. Eight of the fetuses selected were liveborns and eleren still-horns. Care was taken to choose fetuses which showed no evidence of maceration or deterioration. The live-borns survived postnatally from 20 minutes to 10 hours and all were obtained from 2 to 36 hours after death.

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