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It can also move in response to a touch on its skin. [15] Also starting about week 12, the thoracic diaphragm moves up and down as if the fetus were breathing, but this movement disappears about week 16 and does not resume until the third trimester.
A larger brain mass in the neonate corresponds to more energy needed to sustain it. It takes much more energy for the mother if the brain fully develops in the womb. If maternal energy is the limiting factor then an infant can only grow as much as the mother can sustain.
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 ...
The fetus is considered full-term between weeks 37 and 40 when it is sufficiently developed for life outside the uterus. [14] [15] It may be 48 to 53 cm (19 to 21 in) in length when born. Control of movement is limited at birth, and purposeful voluntary movements continue to develop until puberty. [16] [17]
An obstetrician can often determine the size, consistency, shape, and mobility of the form that is felt. The fetal head is hard, round, and moves independently of the trunk while the buttocks feel softer, are symmetric, and the shoulders and limbs have small bony processes ; unlike the head , they move with the trunk.
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 .
A baby's chances for survival increases 3 to 4 percentage points per day between 23 and 24 weeks of gestation, and about 2 to 3 percentage points per day between 24 and 26 weeks of gestation. After 26 weeks the rate of survival increases at a much slower rate because survival is high already. [16]
An average of 80% of women wear the wrong bra size, [13] and mothers who are preparing to nurse can benefit from a professional bra fitting from a lactation consultant. [12] Once the baby is born, after the initial stage of breastfeeding with colostrum , the mother will experience her breasts filling with milk (sometimes referred to as "the ...