You offered, "... drew His human flesh from her, and his fetal nourishment from her ..." May I humbly point out to you that He drew none of His human flesh from Mary, though He did draw fetal nourishment from Mary's body if His gestational development was as typical human gestation. From the moment of conception (and He was conceived prior to being introduced to Mary's womb), the embryo then fetus builds ALL of the cells/tissues of his or her fetal body AND placenta and amniotic sac. Jesus made His own human flesh. [Pardon the intrusion ... I'll step back out of the way now.]