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  2. Anomaly scan - Wikipedia

    en.wikipedia.org/wiki/Anomaly_scan

    The anomaly scan, also sometimes called the anatomy scan, 20-week ultrasound, or level 2 ultrasound, evaluates anatomic structures of the fetus, placenta, and maternal pelvic organs. This scan is an important and common component of routine prenatal care . [ 1 ]

  3. Obstetric ultrasonography - Wikipedia

    en.wikipedia.org/wiki/Obstetric_ultrasonography

    In the second trimester, a standard ultrasound exam typically includes: [12] Fetal number, including number of amnionic sacs and chorionic sacs for multiple gestations; Fetal cardiac activity; Fetal position relative to the uterus and cervix; Location and appearance of the placenta, including site of umbilical cord insertion when possible

  4. Presentation (obstetrics) - Wikipedia

    en.wikipedia.org/wiki/Presentation_(Obstetrics)

    Presentation of twins in Der Rosengarten ("The Rose Garden"), a German standard medical text for midwives published in 1513. In obstetrics, the presentation of a fetus about to be born specifies which anatomical part of the fetus is leading, that is, is closest to the pelvic inlet of the birth canal.

  5. Placental expulsion - Wikipedia

    en.wikipedia.org/wiki/Placental_expulsion

    Manual placenta removal is the evacuation of the placenta from the uterus by hand. [4] It is usually carried out under anesthesia or more rarely, under sedation and analgesia . A hand is inserted through the vagina and cervix into the uterine cavity and the placenta is detached from the uterine wall and then removed manually.

  6. Endometrium - Wikipedia

    en.wikipedia.org/wiki/Endometrium

    The endometrium is central, echogenic (detectable using ultrasound scanners), and has an average thickness of 6.7 mm. During pregnancy, the glands and blood vessels in the endometrium further increase in size and number. Vascular spaces fuse and become interconnected, forming the placenta, which supplies oxygen and nutrition to the embryo and ...

  7. Maternal physiological changes in pregnancy - Wikipedia

    en.wikipedia.org/wiki/Maternal_physiological...

    The placenta also produces human placental lactogen (hPL), which stimulates maternal lipolysis and fatty acid metabolism. As a result, this conserves blood glucose for use by the fetus. It can also decrease maternal tissue sensitivity to insulin, resulting in gestational diabetes.

  8. Fetal circulation - Wikipedia

    en.wikipedia.org/wiki/Fetal_circulation

    The fetal circulation is composed of the placenta, umbilical blood vessels encapsulated by the umbilical cord, heart and systemic blood vessels. A major difference between the fetal circulation and postnatal circulation is that the lungs are not used during the fetal stage resulting in the presence of shunts to move oxygenated blood and ...

  9. Placental cotyledon - Wikipedia

    en.wikipedia.org/wiki/Placental_cotyledon

    The form of the human placenta is generally classified as a discoid placenta. Within this, the cotyledons are the approximately 15-25 separations of the decidua basalis of the placenta, separated by placental septa. [3] Each cotyledon consists of a main stem of a chorionic villus as well as its branches and sub-branches. [3]