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Reproductive System Development (view source)
Revision as of 14:29, 22 August 2011
, 14:29, 22 August 2011→Freemartinism
==Abnormal Reproductive Development==
==Abnormal Reproductive Development==
===Freemartinism===
===Freemartinism===
Freemartinism occurs where a heifer is born twinned with a bull and there is a common blood supply between the male and female fetuses. The female fetus is therefore exposed to AMH and testosterone from the male. The result is incompletely developed paramesonephric ducts and ovaries that do not have a full complement of germ cells. Together with this, the gonads may produce testosterone and androstenedione and the nervous systemk may have differentiated such that a female will display male characteristics and behaviours. For further information on freemartinism, please see [[Freemartinism|here]].
===Chryptorchidism===
===Chryptorchidism===
Cryptorchism represents a failure of the testes to descend into the scrotum. Cryptorchidism has been linked to environmental factors. For further information regarding this abnormal development please see [[Cryptorchidism|here]].
Cryptorchism represents a failure of the testes to descend into the scrotum. Cryptorchidism has been linked to environmental factors. For further information regarding this abnormal development please see [[Cryptorchidism|here]].