Science / Biology / Placenta: An organ produced from interlocking maternal and embryonic tissue in placental mammals; supplies nutrients to the embryo and fetus and removes wastes.

Placental Mammals

Science / Biology / Placental Mammals: One of three groups of mammals that carry their young in the mothers body for long periods during which the fetus is nourished by the placenta. Humans are placental mammals. MORE


Business / Finance / Labor: Another term for direct labor. See also salaries and benefits. MORE

Alpha-Fetoprotein (AFP)

Science / Genetics / Alpha-Fetoprotein (AFP): A protein excreted by the fetus into the amniotic fluid and from there into the mother's bloodstream through the placenta. MORE

Umbilical Cord

Science / Biology / Umbilical Cord: The structure that connects the placenta and the embryo; contains the umbilical arteries and the umbilical vein. MORE

Chorionic Villi Sampling (CVS)

Science / Biology / Chorionic Villi Sampling (CVS): A method of prenatal testing in which fetal cells from the fetal side of the placenta (chorionic villi) are extracted and analyzed for chromosomal and biochemical defects. MORE


Science / Biology / Marsupials: Pouched mammals. The young develop internally, but are born while in an embryonic state and remain in a pouch on the mothers abdomen until development is complete; this group includes kangaroos, koala MORE