When the child is in the uterus- amniotic fluid (water filled environment- child cant breath, digest, excrete)
placenta biological grows out of the developing embryo (not out of the mother)
how does a baby obtain nutrition?
nutrition- blood vessel lead from the embryo down the umbilical cord then spread forming a placenta
- blood vessel inside the placenta are the childs including the veins and the arteries
-mother continues to eat during pregnancy- in the blood stream there would be glucose, amino acids and fats, these will travel through her blood stream into the wall of the uterus
--> the molecules will cross into the childs blood into the placenta, (amino acid, glucose, fats will enter the childs blood
-placenta has a large thin surface area
- nutrients that the child recieve comes from the mother
-child produces carbon dioxide and urea which goes to the mothers blood.
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