Electronic Resource
Oxford, UK
:
Blackwell Publishing Ltd
Journal of obstetric, gynecologic and neonatal nursing
3 (1974), S. 0
ISSN:
1552-6909
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Medicine
Notes:
Genetic sex is established at fertilization, but the external genitalia do not acquire distinct sexual characteristics until the twelfth week, The reproductive organs in both sexes develop from primordia which appear identical during early stages. Gonadal sex is controlled by the Y chromosome which exerts a testis-determining action on the indifferent gonad. Hormones secreted by the fetal testes induce male development. In the absence of a Y chromosome, ovaries differentiate and female development occurs. Errors of sex determination result in true hermaphroditism, ax extremely rare condition. Errors in sexual differentiation lead to pseudohermaphroditism. In males, most abnormalities result from inadequate secretion of masculinizing hormones. In females, pseudohermaphroditism almost always results from excessive androgen secretion by the adrenal glands.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1552-6909.1974.tb00577.x
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