Development of Human Foetus

What you need to learn in this topic

1. Describe fertilisation process and the formation of zygotes
2. Make a sequences and explain the early development of an embryo until implantation: (i) two-celled embryo. (ii) morula. (iii) blastocyst
3. Explain the role of human chorionic gonadotropin (HCG) hormone in the early stages of pregnancy
4. Communicate about the roles of following structures in the development of a foetus: (i) placenta. (ii) umbilical cord
5. Justify the necessity for separate foetal and maternal blood circulatory systems