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  2. History of birth control - Wikipedia

    en.wikipedia.org/wiki/History_of_birth_control

    During the same period Ali ibn Abbas al-Majusi (Persian) documented the use of pessaries made of rock salt for women for whom pregnancy may be dangerous. In the early 10th century the Persian Polymath Abu Ali al-Hussain ibn Abdallah ibn Sina (Persian), known in Europe as Avicenna, included a chapter on birth control in his medical encyclopedia ...

  3. Timeline of human prenatal development - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_human_prenatal...

    The brain divides into 5 vesicles, including the early telencephalon. Leg buds form and hands form as flat paddles on the arms. Rudimentary blood moves through primitive vessels connecting to the yolk sac and chorionic membranes. The metanephros, precursor of the definitive kidney, starts to develop. The initial stomach differentiation begins. [5]

  4. Beginning of pregnancy controversy - Wikipedia

    en.wikipedia.org/wiki/Beginning_of_pregnancy...

    A protein called early pregnancy factor (EPF) is detectable in a woman's blood within 48 hours of ovulation if fertilization has occurred. However, testing for EPF is time-consuming and expensive; most early pregnancy tests detect human chorionic gonadotropin (hCG), a hormone that is not secreted until after implantation. Defining pregnancy as ...

  5. Human embryonic development - Wikipedia

    en.wikipedia.org/wiki/Human_embryonic_development

    The normal period of gestation (pregnancy) is about nine months or 36 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.

  6. History of childhood - Wikipedia

    en.wikipedia.org/wiki/History_of_childhood

    Immel, Andrea and Michael Witmore, eds. Childhood and Children’s Books in Early Modern Europe, 1550–1800. (2006). Kopf, Hedda Rosner. Understanding Anne Frank's the Diary of a Young Girl: A Student Casebook to Issues, Sources, and Historical Documents (1997) Krupp, Anthony. Reason's Children: Childhood in Early Modern Philosophy (2009)

  7. Birth control movement in the United States - Wikipedia

    en.wikipedia.org/wiki/Birth_control_movement_in...

    A third early American novel on both prevention of conception and abortion was the book The married woman's private medical companion: embracing the treatment of menstruation, or monthly turns, during their stoppage, irregularity, or entire suppression: pregnancy, and how it may be determined, with the treatment of its various diseases ...

  8. Fact check: Claim that pregnancy can be detected the day ...

    www.aol.com/fact-check-claim-pregnancy-detected...

    A pregnancy test detects the presence of the pregnancy hormone human chorionic gonadotropin in a person’s body. The body doesn’t produce that hormone until several days after conception.

  9. Pregnancy - Wikipedia

    en.wikipedia.org/wiki/Pregnancy

    A pregnancy is considered term at 37 weeks of gestation. It is preterm if less than 37 weeks and post-term at or beyond 42 weeks of gestation. The American College of Obstetricians and Gynecologists have recommended further division with early term 37 weeks up to 39 weeks, full term 39 weeks up to 41 weeks, and late term 41 weeks up to 42 weeks ...

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