Male advancement in prenatal hand development
نویسندگان
چکیده
منابع مشابه
Male advancement in prenatal hand development.
Male advancement in the developing hand was evidenced by 66 grossly and microscopically normal embryos in the 15-75 mm crown-rump range. Male advancement was particularly pronounced in the younger (1 530 mm) embryos, both in the proximal hand region including the round bones of the wrist and in the distal hand region, comprising the metacarpals and phalanges. Thirty-four additional embryos, abn...
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As shown in 15 male and 17 female developmentally-normal, 6-9 week (15-47 mm crown-rump length) embryos, intercorrelations (communalities) involving both mesial and distal deciduous teeth and proximal and distal segments of the developing hand were systematically higher in female embryos than in male embryos, without exception, a finding in surprising accordance with postnatal dimensional and t...
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During postnatal development the female is more advanced than the male in calcification and eruption of all permanent teeth, except for the third molar. In deciduous teeth the direction is reversed; males are slightly more advanced (H. V. MEREDITH, J Dent Res 25:4366, 1946). The direction and the magnitude of prenatal dental dimorphism is of interest, but has not been systematically explored. W...
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ژورنال
عنوان ژورنال: American Journal of Physical Anthropology
سال: 1974
ISSN: 0002-9483,1096-8644
DOI: 10.1002/ajpa.1330410302