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Active and quiet periods for the fetus do not correspond to those of the mother; fetuses are most active from 9 a.m. to 2 p.m. and again from 7 p.m. to 4 a.m. [21] During the last four to six weeks before birth, most of the fetus's kicking and jabbing movements occur while it is sleeping lightly.
If one strikes a pregnant woman or gives her poison in order to procure an abortion, if the fetus is already formed or quickened, especially if it is quickened, he commits homicide. The fetal right to life post-quickening was recognized by the 18th century British legal scholar William Blackstone as a legally protected right "inherent by nature ...
One of the most important types of memory is that which stores information contributing to the maternal bond between infant and mother. This form of memory is important for a type of development known as attachment. [2] Fetal memory is thus critical to the survival of the fetus both prenatally (in the womb) and after birth as an infant.
By 4 months, the average infant sleeps 14 hours a day (including naps), but this amount can vary considerably. [10] By 8 months, most infants continue to wake during the night, though a majority are able to fall back asleep without parental involvement. [2] At 9 months, only a third of infants sleep through the night without waking. [3]
Aristotelian Soul. Among Greek scholars, Hippocrates (c.460 – c.370 BC) believed that the embryo was the product of male semen and a female factor. But Aristotle (384 – 322 BC) held that only male semen gave rise to an embryo, while the female only provided a place for the embryo to develop, [4] (a concept he acquired from the preformationist Pythagoras).
The growth rate of an embryo and infant can be reflected as the weight per gestational age, and is often given as the weight put in relation to what would be expected by the gestational age. A baby born within the normal range of weight for that gestational age is known as appropriate for gestational age (AGA).
The most babies are born in the summer, with an average of 12.25 births per day. Winter is not so surprisingly the least popular month for new children, with 11.39.
The gestation length for humans is 266 days, or eight days short of nine months, which is counted from the first day of the woman's last menstrual period. During gestation, mothers must support the metabolic cost of tissue growth, both of the fetus and the mother, as well as the ever-increasing metabolic rate of the growing fetus. [ 14 ]