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  2. Human embryonic development - Wikipedia

    en.wikipedia.org/wiki/Human_embryonic_development

    Embryonic development in the human, covers the first eight weeks of development; at the beginning of the ninth week the embryo is termed a fetus. The eight weeks have 23 stages. Human embryology is the study of this development during the first eight weeks after fertilization. The normal period of gestation (pregnancy) is about nine months or ...

  3. Pregnancy - Wikipedia

    en.wikipedia.org/wiki/Pregnancy

    The second trimester is defined as starting, between the beginning of week 13 (12 weeks +0 days of GA) [4] and beginning of week 15 (14 weeks + 0 days of GA). [36] It ends at the end of week 27 (26 weeks + 6 days of GA) [ 36 ] or end of week 28 (27 weeks + 6 days of GA).

  4. Sexual activity during pregnancy - Wikipedia

    en.wikipedia.org/wiki/Sexual_activity_during...

    Most women can continue to engage in sexual activity during pregnancy, including sexual intercourse. [ 1] Most research suggests that during pregnancy both sexual desire and frequency of sexual relations decrease. [ 2][ 3] In context of this overall decrease in desire, some studies indicate a second-trimester increase, preceding a decrease ...

  5. Timeline of human prenatal development - Wikipedia

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

    Gestational age: 3 weeks and 0 days until 3 weeks and 6 days old. 22–28 days from last menstruation. Embryonic age: Week nr 2. 1 week old. 8–14 days from fertilization. Trophoblast cells surrounding the embryonic cells proliferate and invade deeper into the uterine lining. They will eventually form the placenta and embryonic membranes.

  6. Obstetric ultrasonography - Wikipedia

    en.wikipedia.org/wiki/Obstetric_ultrasonography

    One randomized controlled trial, however, came to the result of a higher perinatal death rate of normally formed infants born after 24 weeks exposed to Doppler ultrasonography (RR 3.95, 95% CI 1.32–11.77), but this was not a primary outcome of the study, and has been speculated to be due to chance rather than a harmful effect of Doppler itself.

  7. Crown-rump length - Wikipedia

    en.wikipedia.org/wiki/Crown-rump_length

    The blue line is the mean and the green area delimits the 3rd versus the 97th percentile. [1] Ultrasound image of the foetus at 12 weeks of pregnancy in a sagittal scan. Measurements of fetal Crown Rump Length (CRL). The embryo and fetus float in the amniotic fluid inside the uterus of the mother usually in a curved posture resembling the ...

  8. Dilation and evacuation - Wikipedia

    en.wikipedia.org/wiki/Dilation_and_evacuation

    Dilation and evacuation. Dilation and evacuation ( D&E) or dilatation and evacuation (British English) is the dilation of the cervix and surgical evacuation of the uterus (potentially including the fetus, placenta and other tissue) after the first trimester of pregnancy. It is a method of abortion as well as a common procedure used after ...

  9. Signs and symptoms of pregnancy - Wikipedia

    en.wikipedia.org/.../Signs_and_symptoms_of_pregnancy

    Carpal tunnel syndrome – Carpal tunnel syndrome can occur in up to 70% of pregnant women and typically has a benign course. [16] [17] It manifests as pain, numbness, and tingling in the thumb, index finger, middle finger and the thumb side of the ring finger. [18] The symptoms of carpal tunnel syndrome during pregnancy are usually mild and do ...

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