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1. Structure and function of the placenta and amniotic sac/fluid
2. Objective 11.4.12 Explain how the structure and function of the placenta, including its hormonal role in secretion of oestrogen and progesterone, maintain pregnancy.
3. Objective 11.4.12 Through the first 2-4 weeks, the embryo receives nutrients straight from the endometrium
Tissue grows out of the embryo and ?mingles? with the endometrium to form the placenta
The placenta provides means for embryo?s basic needs
Oxygen and nutrients for respiration
Removal of waste and CO2
Blood travels to the embryo through the placenta and into the umbilical cord
The embryo secretes hormones that control the mother?s reproductive system
Human chorionic gonadotropin (HCG) is released by the embryo and acts like luteinizing hormone to continue the production of estrogen and progesterone
4. Objective 11.4.13 State that the fetus is supported and protected by the amniotic sac and the amniotic fluid