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  2. Fundal height - Wikipedia

    en.wikipedia.org/wiki/Fundal_height

    Illustration of fundal height at various points during pregnancy. Fundal height, or McDonald's rule, is a measure of the size of the uterus used to assess fetal growth and development during pregnancy. It is measured from the top of the mother's uterus to the top of the mother's pubic symphysis.

  3. Gestational sac - Wikipedia

    en.wikipedia.org/wiki/Gestational_sac

    The gestational sac is spherical in shape, and is usually located in the upper part (fundus) of the uterus.By approximately nine weeks of gestational age, due to folding of the trilaminar germ disc, the amniotic sac expands and occupy the majority of the volume of the gestational sac, eventually reducing the extraembryonic coelom (the gestational sac or the chorionic cavity) to a thin layer ...

  4. Uterus - Wikipedia

    en.wikipedia.org/wiki/Uterus

    During pregnancy, the uterine glands and blood vessels in the endometrium further increase in size and number and form the decidua. Vascular spaces fuse and become interconnected, forming the placenta, which supplies oxygen and nutrition to the embryo and fetus. [8] [9] The myometrium of the uterus mostly consists of smooth muscle.

  5. Endometrium - Wikipedia

    en.wikipedia.org/wiki/Endometrium

    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 fetus .

  6. Crown-rump length - Wikipedia

    en.wikipedia.org/wiki/Crown-rump_length

    An ultrasound showing an embryo measured to have a crown-rump length of 1.67 cm and estimated to have a gestational age of 8 weeks and 1 day. Crown-rump length (CRL) is the measurement of the length of human embryos and fetuses from the top of the head (crown) to the bottom of the buttocks (rump).

  7. Pregnancy - Wikipedia

    en.wikipedia.org/wiki/Pregnancy

    The uterus, the muscular organ that holds the developing fetus, can expand up to 20 times its normal size during pregnancy. Head engagement, also called "lightening" or "dropping", occurs as the fetal head descends into a cephalic presentation.

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  9. Large for gestational age - Wikipedia

    en.wikipedia.org/wiki/Large_for_gestational_age

    Fetal macrosomia and LGA often do not present with noticeable patient symptoms. Important signs include large fundal height (uterus size) and excessive amniotic fluid (polyhydramnios). [6] Fundal height can be measured from the top of the uterus to the pubic bone and indicates that the newborn is likely large in volume. Excessive amniotic fluid ...