The Span of Gestation And the Cause of Birth : a Study of the Critical Period And Its Effects in Mammalia
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In all mammals ovulation during gestation is either abortive or suppressed: and this is necessary, for normal ovulation during gestation would lead to abortion.
— 95 — The corpus luteum is probably a contrivance for the suppression or rendering abortive of ovulation3 during gestation.
The commencing degeneration of this structure some little time before the end of the gestation (like its rapid atrophy, where fertilisation has not taken place), allows of preparation being made for a new ovulatio...n. As ahready indicated, the approach of this ovulation is, in a reflex manner, the direct cause of birth ^).
In preceding chapters consideration is given to the causes of many abortions in various mammals and to the nature of menstruation.
It has been insisted, as was already done in the memoir "on certain Problems of Vertebrate Embryology", that the critical period (with the consequences following in its train), multiples of this, and the ovulation - periods, normally -suppressed during gestation, must be very fre- quently times of abortion in various mammals, particularly in those, like horse and man, where the gestation is a prolonged one of several units.
What to read after The Span of Gestation And the Cause of Birth : a Study of the Critical Period And Its Effects in Mammalia?
You can find similar books in the "Read Also" column, or choose other free books by Beard, John, 1858- to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
In all mammals ovulation during gestation is either abortive or suppressed: and this is necessary, for normal ovulation during gestation would lead to abortion.
— 95 — The corpus luteum is probably a contrivance for the suppression or rendering abortive of ovulation3 during gestation.
The commencing degeneration of this structure some little time before the end of the gestation (like its rapid atrophy, where fertilisation has not taken place), allows of preparation being made for a new ovulatio...n. As ahready indicated, the approach of this ovulation is, in a reflex manner, the direct cause of birth ^).
In preceding chapters consideration is given to the causes of many abortions in various mammals and to the nature of menstruation.
It has been insisted, as was already done in the memoir "on certain Problems of Vertebrate Embryology", that the critical period (with the consequences following in its train), multiples of this, and the ovulation - periods, normally -suppressed during gestation, must be very fre- quently times of abortion in various mammals, particularly in those, like horse and man, where the gestation is a prolonged one of several units.
What to read after The Span of Gestation And the Cause of Birth : a Study of the Critical Period And Its Effects in Mammalia?
You can find similar books in the "Read Also" column, or choose other free books by Beard, John, 1858- to read onlineMoreLess
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