A vascular organ in mammals, except monotremes and marsupials, present only in the female during gestation. It supplies food and oxygen from the mother to the foetus, and passes back waste. It is implanted in the wall of the uterus and links to the foetus through the umbilical cord. It is expelled after birth
A membranous vascular organ that develops in female mammals during pregnancy, lining the uterine wall and partially enveloping the fetus, to which it is attached by the umbilical cord (source: dictionary com)
The placenta is the mass of veins and tissue inside the womb of a pregnant woman or animal, which the unborn baby is attached to. The drug can be transferred to the baby via the placenta. an organ that forms inside a woman's uterus to feed an unborn baby (from , from plax ). Organ in most mammals that develops in the uterus along with a fetus to mediate metabolic exchange. The umbilical cord attaches it to the fetus at the navel. Nutrients and oxygen in the mother's blood pass across the placenta to the fetus, and metabolic wastes and carbon dioxide from the fetus cross in the other direction; the two blood supplies do not mix. Other substances (e.g., alcohol or drugs) in the mother's blood can also cross the placenta, with effects including congenital disorders and drug addiction in the newborn (see fetal alcohol syndrome); some microorganisms can cross it to infect the fetus, but so do the mother's antibodies. The placenta, weighing a pound or more at the end of pregnancy, is expelled at parturition. Some animals eat it as a source of nutrients; in some species this stimulates lactation
A temporary organ in the uterus that allows a fetus to receive nutrients, oxygen and other substances (such as medications) from the mother and to eliminate carbon dioxide and other wastes
the vascular structure in the uterus of most mammals providing oxygen and nutrients for and transferring wastes from the developing fetus that part of the ovary of a flowering plant where the ovules form
The organ within the pregnant uterus through which the fetus derives its nourishment; at term it averages one-sixth the weight of the fetus; is is disk-shaped, about 2 5 cm thick, and 17 5 cm in diameter
A special tissue that joins the mother and fetus It provides hormones necessary for a successful pregnancy and supplies the fetus with water and nutrients (food) from the mother's blood
special tissue that joins the mother and fetus to provide hormones necessary for a successful pregnancy, and supplies the fetus with water and nutrients (food) from the mothers blood
A special tissue that joins the mother and fetus It provides hormones necessary for a successful pregnancy, and supplies the fetus with water and nutrients (food) from the mother's blood
The vascular organ lining the uterus which is produced during early pregnancy for the nourishment and protection of the developing fetus It is attached to the fetus by the umbilical cord, from which oxygen and nutrients flow between the fetus and the mother The placenta is expelled from the uterus after delivery of the baby
The special tissue that joins the mother to her fetus; it provides the fetus with oxygen, water, and nutrients (food) from the mother's blood and secretes the hormones necessary for successful pregnancy