Describe the role of the placenta in the nutrition of the developing embryo
Placenta is an organ the connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply.
(Fetus is an unborn offspring of mammals.)
(Uterus is the organ in the lower body of a woman or female mammal, where offspring are conceived and in which they are gestate before birth; the womb.)
The child in the uterus is surrounded by amniotic fluid. As a result, the child cannot digest, breath and carry out excretion.
The placenta structure connects the maternal blood vessel into the child's blood vessel.
The child obtains nutrition by the umbilical cord in the placenta structure growing out of the embryo, NOT out of the mother.
Blood vessels inside the placenta, including arteries and veins, are blood vessels of the child.
The placenta is going into the wall of uterus.
In the blood stream of mother it would have glucose, amino acid and fats which will travel through her blood stream (maternal blood vessel) and into the wall of the uterus. There, the molecules will cross into the child's blood at the placenta. Then such molecules will go from the mother's blood into the child's blood, crossing the placenta.
The placenta has a large surface area and thin barrier.
The child also produce waste such as carbon dioxide and urea into the mother's blood who will be responsible of the excretion.
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