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Whether a movement is supraspinally determined can be inferred by comparison to movements of an anencephalic fetus. [2] This article primarily deals with voluntary and reflex movements. Ages are given as age from fertilization rather than as gestational age. Some sources contend that there is no voluntary movement until after birth. [3]
Quickening indicates the start of fetal movements, usually felt 14–26 weeks after conception, or between the fourth and sixth month. [ 5 ] [ 6 ] A woman pregnant for the first time (i.e., a primigravida woman) typically feels fetal movements at about 20–21 weeks, whereas a woman who has given birth at least once will typically feel ...
The term postterm pregnancy is used to describe a condition in which a woman has not yet delivered her baby after 42 weeks of gestation, two weeks beyond the usual 40-week duration of pregnancy. [150] Postmature births carry risks for both the mother and the baby, including meconium aspiration syndrome, fetal malnutrition, and stillbirths. [151]
Placental expulsion (also called afterbirth) occurs when the placenta comes out of the birth canal after childbirth.The time between the expulsion of the baby and the expulsion of the placenta is called the third stage of labor.
The first ten weeks of gestational age is the period of embryogenesis and together with the first three weeks of prenatal development make up the first trimester of pregnancy. From the 10th week of gestation (8th week of development), the developing embryo is called a fetus.
This can happen up to about 50–73 hours after birth. Once full lactation begins, the woman's breasts swell significantly and can feel achy, lumpy and heavy (which is referred to as engorgement). Her breasts may increase in size again by an additional 1 or 2 cup sizes, but individual breast size may vary depending on how much the infant nurses ...
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In some cases, pregnant women with diabetes may be encouraged to express and store their colostrum during pregnancy, in case their blood sugar is too low for feeding the baby breast milk after birth. [18] There is no evidence on the safety or potential benefits when pregnant women with diabetes express and store breast milk prior to the baby's ...