Question

What changes occur to help the develop embryo in the mother? What is a placenta?

Answer 1

1. Amniotic sac develops, that surrounds the foetus throughout the pregnancy.
2. Formation of umbilical cord that connects mother to the foetus for the exchange of gases, wastes and nutrients.
3. Development of placenta.
Placenta is a bag-like structure that is attached to the uterus. It protects the foetus from the mechanical shock and injury.