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  2. Childbirth - Wikipedia

    en.wikipedia.org/wiki/Childbirth

    The postpartum period can be divided into three distinct stages; the initial or acute phase, six to 12 hours after childbirth; subacute postpartum period, which lasts two to six weeks, and the delayed postpartum period, which can last up to six months. In the subacute postpartum period, 87% to 94% of women report at least one health problem.

  3. Prolonged labor - Wikipedia

    en.wikipedia.org/wiki/Prolonged_labor

    Prolonged labor is the inability of a woman to proceed with childbirth upon going into labor. [1] Prolonged labor typically lasts over 20 hours for first time mothers, and over 14 hours for women that have already had children. [1] Failure to progress can take place during two different phases; the latent phase and active phase of labor. [1]

  4. Placental expulsion - Wikipedia

    en.wikipedia.org/wiki/Placental_expulsion

    The period of time starting just after the baby is expelled until just after the placenta is expelled is called the third stage of labor. The third stage of labor can be managed actively with several standard procedures, or it can be managed expectantly (also known as physiological management or passive management), the latter allowing the ...

  5. Human reproduction - Wikipedia

    en.wikipedia.org/wiki/Human_reproduction

    Labor is separated into 4 stages. The first stage involves latent phase and active phase separated by the dilation of the cervix for 6 to 10 cm. The second stage is the pushing stage. The third stage involves the delivery of the placenta. And the last stage is the contraction of the uterus. [22]

  6. Human embryonic development - Wikipedia

    en.wikipedia.org/wiki/Human_embryonic_development

    The normal period of gestation (pregnancy) is about nine months or 40 weeks. The germinal stage refers to the time from fertilization through the development of the early embryo until implantation is completed in the uterus. The germinal stage takes around 10 days. [1] During this stage, the zygote divides in a process called cleavage.

  7. Prenatal development - Wikipedia

    en.wikipedia.org/wiki/Prenatal_development

    The perinatal period (from Greek peri, "about, around" and Latin nasci "to be born") is "around the time of birth". In developed countries and at facilities where expert neonatal care is available, it is considered from 22 completed weeks (usually about 154 days) of gestation (the time when birth weight is normally 500 g) to 7 completed days ...

  8. Human fertilization - Wikipedia

    en.wikipedia.org/wiki/Human_fertilization

    Fertilization was not understood in antiquity. Hippocrates believed that the embryo was the product of male semen and a female factor. But Aristotle held that only male semen gave rise to an embryo, while the female only provided a place for the embryo to develop, [5] a concept he acquired from the preformationist Pythagoras.

  9. Caesarean section - Wikipedia

    en.wikipedia.org/wiki/Caesarean_section

    [138] [11] The Ancient Roman caesarean section was first performed to remove a baby from the womb of a mother who died during childbirth, a practice sometimes called the Caesarean law. [ 139 ] The Spanish saint Raymond Nonnatus (1204–1240) received his surname—from the Latin non-natus ('not born')—because he was born by caesarean section.