All the organs of the fetus are formed and are in proportion to each other as in a full-term newborn, only they are smaller, by
a. the eighth week. c. the fifth month.
b. the twelfth week. d. the seventh month.
Question 2
Wastes, oxygen, and antibodies are exchanged between the mother and embryo through the
a. amniotic sac. c. blastocyst.
b. chorionic sac. d. placenta.