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Embryo loss. Embryo loss (also known as embryo death) is the death of an embryo at any stage of its development which in humans, is between the second through eighth week after fertilization. [1] Failed development of an embryo often results in the disintegration and assimilation of its tissue in the uterus, known as embryo resorption.
Obstetrics. A blighted ovum is a pregnancy in which the embryo never develops or develops and is reabsorbed. [1] In a normal pregnancy, an embryo would be visible on an ultrasound by six weeks after the woman's last menstrual period. [2] Anembryonic gestation is one of the causes of miscarriage of a pregnancy and accounts for roughly half of ...
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).
Later Christian thought on abortion. From the 4th to 16th Century AD, Christian philosophers, while maintaining the condemnation of abortion as wrong, had varying stances on whether abortion was murder. Under the first Christian Roman emperor Constantine, there was a relaxation of attitudes toward abortion and exposure of children. [1]
Quickening. For other uses, see Quickening (disambiguation). In pregnancy terms, quickening is the moment in pregnancy when the pregnant woman starts to feel the fetus's movement in the uterus. [1] It was believed that the quickening marked the moment that a soul entered the fetus, termed ensoulment. [2]
Human embryo at 8-cell stage. The beginning of human personhood is the moment when a human is first recognized as a person. There are differences of opinion about the precise time when human personhood begins and the nature of that status. The issue arises in a number of fields, including science, religion, philosophy, and law, and is most ...
The viewpoint that pregnancy, or at least morally significant human life, begins at the exact moment that sperm and egg interact is highly controversial, although it is commonly held by groups such as the Roman Catholic Church and many traditionally religious individuals, and other alternate viewpoints are put forth. [1]
Monstrous birth. A monstrous birth, variously defined in history, is a birth in which a defect renders the animal or human child malformed to such a degree as to be considered "monstrous". Such births were often taken as omens, signs of God, or moral warnings to be wielded by society at large as a tool for manipulation in various ways.