After talking with her OB-GYN, reading recommended clinical literature from vetted cites, and learning about pregnancy, Lauren has decided not to smoke, not to drink alcoholic beverages, to use only necessary medication, and to limit her intake of caffeine during her pregnancy to safeguard her baby's health. She became very interested in the functioning of the placenta and discovered:
Group of answer choices
does not protect the developing embryo or fetus from chemicals in smoke, the mother's antibodies, antibiotics, alcohol, some viruses, like HIV and German measles, and some bacteria like syphillis.
produces hormones.
acts as a barrier for many, but not all, agents that are potentially harmful to the embryo or fetus.
acts as the site of exchange of glucose, oxygen and waste products without permitting the fetal blood to come in contact with maternal blood.