Search results
Results From The WOW.Com Content Network
Environmental toxicants and fetal development. Environmental toxicants and fetal development is the impact of different toxic substances from the environment on the development of the fetus. This article deals with potential adverse effects of environmental toxicants on the prenatal development of both the embryo or fetus, as well as pregnancy ...
Amniotic fluid. The amniotic fluid is the protective liquid contained by the amniotic sac of a gravid amniote. This fluid serves as a cushion for the growing fetus, but also serves to facilitate the exchange of nutrients, water, and biochemical products between mother and fetus. For humans, the amniotic fluid is commonly called water or waters ...
Meconium is the earliest stool of a mammalian infant resulting from defecation. Unlike later feces, meconium is composed of materials ingested during the time the infant spends in the uterus: intestinal epithelial cells, lanugo, mucus, amniotic fluid, bile, and water. Meconium, unlike later feces, is viscous and sticky like tar – its color ...
In the United States, the level was 4 times as high, with 84 per 1,000 teenage girls pregnant. The likelihood of pregnant teenage girls having abortions across the four countries differ and exclude miscarriages. In the U.S. abortion rates for 15–19 years are 35%, compared to 69% in Sweden, 39% in Great Britain, 46% in Canada, and 51% in France.
Amniotic sac. The amniotic sac, also called the bag of waters[ 1][ 2] or the membranes, [ 3] is the sac in which the embryo and later fetus develops in amniotes. It is a thin but tough transparent pair of membranes that hold a developing embryo (and later fetus) until shortly before birth. The inner of these membranes, the amnion, encloses the ...
Embryo. An embryo is the initial stage of development for a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male sperm cell. The resulting fusion of these two cells produces a single-celled zygote that undergoes ...
Rupture of membranes ( ROM) or amniorrhexis is a term used during pregnancy to describe a rupture of the amniotic sac. [ 1] Normally, it occurs spontaneously at full term either during or at the beginning of labor. Rupture of the membranes is known colloquially as " breaking (one's) water ," especially when induced rather than spontaneous, or ...
Human embryonic development or human embryogenesis is the development and formation of the human embryo. It is characterised by the processes of cell division and cellular differentiation of the embryo that occurs during the early stages of development. In biological terms, the development of the human body entails growth from a one-celled ...